TY  - JOUR
AU  - Matić, Vasilije
AU  - Ivić, Zoran
AU  - Pržulj, Željko
AU  - Čevizović, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13086
AB  - In this paper, we considered a molecular structure that consists of a molecular chain and an additional molecule (donor or acceptor) that can inject (or remove) single excitation (vibron, electron, etc.) onto the molecular chain. We assumed that the excitation forms a self-trapped state due to the interaction with mechanical oscillations of the chain structure elements. We analyzed the energy spectra of the excitation and showed that its state (when it migrates to the molecular chain) has the properties of the nonadiabatic polaron state. The conditions under which the excitation can migrate from one subsystem to another one were considered. It was shown that the presence of a “donor” molecule cannot significantly change the properties of the excitation located on the molecular chain. At the same time, the molecular chain can affect the position of the energy level of the excitation localized on the donor subsystem. Indirectly, this can influence the process of excitation migration from one subsystem to another one. The influence of the basic energy parameters of the system and the environment temperature on this process are discussed. The entire system was assumed to be in thermal equilibrium with the environment.
T2  - Physical Review E
T1  - Influence of donor or acceptor presence on excitation states in molecular chains: Nonadiabatic polaron approach
VL  - 109
IS  - 2
DO  - 10.1103/PhysRevE.109.024401
ER  - 

@article{
author = "Matić, Vasilije and Ivić, Zoran and Pržulj, Željko and Čevizović, Dalibor",
year = "2024",
abstract = "In this paper, we considered a molecular structure that consists of a molecular chain and an additional molecule (donor or acceptor) that can inject (or remove) single excitation (vibron, electron, etc.) onto the molecular chain. We assumed that the excitation forms a self-trapped state due to the interaction with mechanical oscillations of the chain structure elements. We analyzed the energy spectra of the excitation and showed that its state (when it migrates to the molecular chain) has the properties of the nonadiabatic polaron state. The conditions under which the excitation can migrate from one subsystem to another one were considered. It was shown that the presence of a “donor” molecule cannot significantly change the properties of the excitation located on the molecular chain. At the same time, the molecular chain can affect the position of the energy level of the excitation localized on the donor subsystem. Indirectly, this can influence the process of excitation migration from one subsystem to another one. The influence of the basic energy parameters of the system and the environment temperature on this process are discussed. The entire system was assumed to be in thermal equilibrium with the environment.",
journal = "Physical Review E",
title = "Influence of donor or acceptor presence on excitation states in molecular chains: Nonadiabatic polaron approach",
volume = "109",
number = "2",
doi = "10.1103/PhysRevE.109.024401"
}

Matić, V., Ivić, Z., Pržulj, Ž.,& Čevizović, D.. (2024). Influence of donor or acceptor presence on excitation states in molecular chains: Nonadiabatic polaron approach. in Physical Review E, 109(2).
https://doi.org/10.1103/PhysRevE.109.024401

Matić V, Ivić Z, Pržulj Ž, Čevizović D. Influence of donor or acceptor presence on excitation states in molecular chains: Nonadiabatic polaron approach. in Physical Review E. 2024;109(2).
doi:10.1103/PhysRevE.109.024401 .

Matić, Vasilije, Ivić, Zoran, Pržulj, Željko, Čevizović, Dalibor, "Influence of donor or acceptor presence on excitation states in molecular chains: Nonadiabatic polaron approach" in Physical Review E, 109, no. 2 (2024),
https://doi.org/10.1103/PhysRevE.109.024401 . .

TY  - CONF
AU  - Ivić, Zoran
AU  - Nikolić, Violeta N.
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10968
AB  - We present an overview of the recent studies on self-induced transparency in superconducting quantum metamaterials. The realization of slow-light optical solitons and their role in quantum information storage is emphasized. © 2023 IEEE.
PB  - IEEE
C3  - InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17
T1  - Slow Light in Quantum Metamaterials
DO  - 10.1109/INFOTEH57020.2023.10094056
ER  - 

@conference{
author = "Ivić, Zoran and Nikolić, Violeta N. and Čevizović, Dalibor and Pržulj, Željko",
year = "2023",
abstract = "We present an overview of the recent studies on self-induced transparency in superconducting quantum metamaterials. The realization of slow-light optical solitons and their role in quantum information storage is emphasized. © 2023 IEEE.",
publisher = "IEEE",
journal = "InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17",
title = "Slow Light in Quantum Metamaterials",
doi = "10.1109/INFOTEH57020.2023.10094056"
}

Ivić, Z., Nikolić, V. N., Čevizović, D.,& Pržulj, Ž.. (2023). Slow Light in Quantum Metamaterials. in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17
IEEE..
https://doi.org/10.1109/INFOTEH57020.2023.10094056

Ivić Z, Nikolić VN, Čevizović D, Pržulj Ž. Slow Light in Quantum Metamaterials. in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17. 2023;.
doi:10.1109/INFOTEH57020.2023.10094056 .

Ivić, Zoran, Nikolić, Violeta N., Čevizović, Dalibor, Pržulj, Željko, "Slow Light in Quantum Metamaterials" in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17 (2023),
https://doi.org/10.1109/INFOTEH57020.2023.10094056 . .

TY  - CONF
AU  - Ivić, Zoran
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
AU  - Ivković, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10969
AB  - We present a theoretical prediction of a novel, nonEIT, mechanism for the achievement of a transparency window. It relies on an intrinsically nonlinear (soliton type) mechanism which may be exploited for the production of slow light, which may appear in a photonic band-gap structure: the infinite coupled cavity array (CCA), filled with two-level systems - qubits. Each cavity contains a single qubit. The most important prediction is substantial dependence of the pulse transparency on its width. In particular, the medium is opaque for very short pulses with carrier wave frequency below the photonic gap. When the pulse width exceeds the critical one, a twin transparency window separated by a finite band gap appears in the SIT pulse dispersion law. Both low-frequency TW and the SIT pulse band gap lie entirely within the polaritonic band gap.
PB  - IEEE
C3  - InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17
T1  - Dispersion Management of Light Pulse Transparency in Quantum Metamaterials
DO  - 10.1109/INFOTEH57020.2023.10094191
ER  - 

@conference{
author = "Ivić, Zoran and Čevizović, Dalibor and Pržulj, Željko and Ivković, Ivana",
year = "2023",
abstract = "We present a theoretical prediction of a novel, nonEIT, mechanism for the achievement of a transparency window. It relies on an intrinsically nonlinear (soliton type) mechanism which may be exploited for the production of slow light, which may appear in a photonic band-gap structure: the infinite coupled cavity array (CCA), filled with two-level systems - qubits. Each cavity contains a single qubit. The most important prediction is substantial dependence of the pulse transparency on its width. In particular, the medium is opaque for very short pulses with carrier wave frequency below the photonic gap. When the pulse width exceeds the critical one, a twin transparency window separated by a finite band gap appears in the SIT pulse dispersion law. Both low-frequency TW and the SIT pulse band gap lie entirely within the polaritonic band gap.",
publisher = "IEEE",
journal = "InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17",
title = "Dispersion Management of Light Pulse Transparency in Quantum Metamaterials",
doi = "10.1109/INFOTEH57020.2023.10094191"
}

Ivić, Z., Čevizović, D., Pržulj, Ž.,& Ivković, I.. (2023). Dispersion Management of Light Pulse Transparency in Quantum Metamaterials. in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17
IEEE..
https://doi.org/10.1109/INFOTEH57020.2023.10094191

Ivić Z, Čevizović D, Pržulj Ž, Ivković I. Dispersion Management of Light Pulse Transparency in Quantum Metamaterials. in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17. 2023;.
doi:10.1109/INFOTEH57020.2023.10094191 .

Ivić, Zoran, Čevizović, Dalibor, Pržulj, Željko, Ivković, Ivana, "Dispersion Management of Light Pulse Transparency in Quantum Metamaterials" in InfoTeh-Jahorina : 22. međunarodni simpozijum INFOTEH-JAHORINA 202; Mart 15-17 (2023),
https://doi.org/10.1109/INFOTEH57020.2023.10094191 . .

TY  - CONF
AU  - Ivić, Zoran
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10248
AB  - We study quantum features of electromagnetic radiation propagating in a waveguide built of an infinite array of super-conducting qubits (SCQ) placed within a resonator comprised of two massive superconductors. Such engineered media, so-called superconducting quantum metamaterials (SCQMM), have a great potential for quantum information processing and communications and devise a comprehensive study of the nature of the “light”-matter interaction. We predict the emergence of novel in-terference effects with possible practical applications. For exam-ple, photons may exhibit a nontrivial dispersion relation such as band edges and band gaps. In this way, QMMs may be viewed as photonic crystals. This, in turn, enriches their potential for practi-cal applications and provides novel means for devising compre-hensive studies of both practical and fundamental aspects of the interaction of artificial atoms and the EM field.
C3  - 2022 21st International Symposium INFOTEH-JAHORINA (INFOTEH)
T1  - Superconducting quantum metamaterial as photonic crystal
SP  - 1
EP  - 4
DO  - 10.1109/INFOTEH53737.2022.9751265
ER  - 

@conference{
author = "Ivić, Zoran and Čevizović, Dalibor and Pržulj, Željko",
year = "2022",
abstract = "We study quantum features of electromagnetic radiation propagating in a waveguide built of an infinite array of super-conducting qubits (SCQ) placed within a resonator comprised of two massive superconductors. Such engineered media, so-called superconducting quantum metamaterials (SCQMM), have a great potential for quantum information processing and communications and devise a comprehensive study of the nature of the “light”-matter interaction. We predict the emergence of novel in-terference effects with possible practical applications. For exam-ple, photons may exhibit a nontrivial dispersion relation such as band edges and band gaps. In this way, QMMs may be viewed as photonic crystals. This, in turn, enriches their potential for practi-cal applications and provides novel means for devising compre-hensive studies of both practical and fundamental aspects of the interaction of artificial atoms and the EM field.",
journal = "2022 21st International Symposium INFOTEH-JAHORINA (INFOTEH)",
title = "Superconducting quantum metamaterial as photonic crystal",
pages = "1-4",
doi = "10.1109/INFOTEH53737.2022.9751265"
}

Ivić, Z., Čevizović, D.,& Pržulj, Ž.. (2022). Superconducting quantum metamaterial as photonic crystal. in 2022 21st International Symposium INFOTEH-JAHORINA (INFOTEH), 1-4.
https://doi.org/10.1109/INFOTEH53737.2022.9751265

Ivić Z, Čevizović D, Pržulj Ž. Superconducting quantum metamaterial as photonic crystal. in 2022 21st International Symposium INFOTEH-JAHORINA (INFOTEH). 2022;:1-4.
doi:10.1109/INFOTEH53737.2022.9751265 .

Ivić, Zoran, Čevizović, Dalibor, Pržulj, Željko, "Superconducting quantum metamaterial as photonic crystal" in 2022 21st International Symposium INFOTEH-JAHORINA (INFOTEH) (2022):1-4,
https://doi.org/10.1109/INFOTEH53737.2022.9751265 . .

TY  - JOUR
AU  - Pejić, Milan
AU  - Pržulj, Željko
AU  - Čevizović, Dalibor
AU  - Lazarides, Nikos
AU  - Tsironis, Giorgos P.
AU  - Ivić, Zoran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10524
AB  - We study quantum features of electromagnetic radiation propagating in a one-dimensional superconducting quantum metamaterial composed of an infinite chain of charge qubits placed within two stripe massive superconducting resonators. The quantum-mechanical model is derived assuming weak fields and that, at low temperatures, each qubit is either unoccupied or occupied by a single Cooper pair. We demonstrate the emergence of two bands of single-photon qubit bound states with the energies lying outside the photon continuum—one is above and the second slightly below the linear photon band. The higher energy band varies slowly with the qubit-photon center of mass quasimomentum. It becomes practically flat provided that the electromagnetic energy is far below the Josephson energy when the latter is small compared to the charging energy. The dispersion of the lower band is practically identical to that of free photons. The emergence of bound states may cause radiation trapping indicating possible applicability for the control of photon transport in superconducting qubit-based artificial media.
T2  - Physical Review B
T1  - Qubit-photon bound states in superconducting metamaterials
VL  - 105
IS  - 23
SP  - 235439
DO  - 10.1103/PhysRevB.105.235439
ER  - 

@article{
author = "Pejić, Milan and Pržulj, Željko and Čevizović, Dalibor and Lazarides, Nikos and Tsironis, Giorgos P. and Ivić, Zoran",
year = "2022",
abstract = "We study quantum features of electromagnetic radiation propagating in a one-dimensional superconducting quantum metamaterial composed of an infinite chain of charge qubits placed within two stripe massive superconducting resonators. The quantum-mechanical model is derived assuming weak fields and that, at low temperatures, each qubit is either unoccupied or occupied by a single Cooper pair. We demonstrate the emergence of two bands of single-photon qubit bound states with the energies lying outside the photon continuum—one is above and the second slightly below the linear photon band. The higher energy band varies slowly with the qubit-photon center of mass quasimomentum. It becomes practically flat provided that the electromagnetic energy is far below the Josephson energy when the latter is small compared to the charging energy. The dispersion of the lower band is practically identical to that of free photons. The emergence of bound states may cause radiation trapping indicating possible applicability for the control of photon transport in superconducting qubit-based artificial media.",
journal = "Physical Review B",
title = "Qubit-photon bound states in superconducting metamaterials",
volume = "105",
number = "23",
pages = "235439",
doi = "10.1103/PhysRevB.105.235439"
}

Pejić, M., Pržulj, Ž., Čevizović, D., Lazarides, N., Tsironis, G. P.,& Ivić, Z.. (2022). Qubit-photon bound states in superconducting metamaterials. in Physical Review B, 105(23), 235439.
https://doi.org/10.1103/PhysRevB.105.235439

Pejić M, Pržulj Ž, Čevizović D, Lazarides N, Tsironis GP, Ivić Z. Qubit-photon bound states in superconducting metamaterials. in Physical Review B. 2022;105(23):235439.
doi:10.1103/PhysRevB.105.235439 .

Pejić, Milan, Pržulj, Željko, Čevizović, Dalibor, Lazarides, Nikos, Tsironis, Giorgos P., Ivić, Zoran, "Qubit-photon bound states in superconducting metamaterials" in Physical Review B, 105, no. 23 (2022):235439,
https://doi.org/10.1103/PhysRevB.105.235439 . .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
AU  - Lazarides, Nikos
AU  - Tsironis, Giorgos P.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8920
AB  - We focus on self-induced transparency (SIT) in the propagation of a pulse in a dispersive medium. The latter can be an ordinary optical medium or, more interestingly, a quantum metamaterial. In both cases we consider a sequence of two level atoms each with a characteristic resonant frequency ω0. The propagation features are controlled by the ratio of the pulse frequency ω over the dipole resonant frequency, i.e. on the quantity X=ω/ω0. We consider analytically two pulse limits, viz. the sharp line limit as well as the inhomogeneouly broadened case. In the first case we find that for pulse frequencies larger than ω0, i.e. for X>1 the SIT pulse may be fully stopped through absorption by the medium provided its time width exceeds a certain critical value. In the latter case of inhomogeneously broadened medium we find no such frequency restrictions provided the pulse is wide enough. As a result an SIT pulse can be arbitrarily arrested by the absorbing medium. This dispersion-induced pulse stopping is a manifestation of the quantum nature of the medium and of possible use in metamaterial applications. © 2020 Elsevier Ltd
T2  - Chaos, Solitons and Fractals
T1  - Dispersive properties of self–induced transparency in two–level media
VL  - 143
SP  - 110611
DO  - 10.1016/j.chaos.2020.110611
ER  - 

@article{
author = "Ivić, Zoran and Čevizović, Dalibor and Pržulj, Željko and Lazarides, Nikos and Tsironis, Giorgos P.",
year = "2021",
abstract = "We focus on self-induced transparency (SIT) in the propagation of a pulse in a dispersive medium. The latter can be an ordinary optical medium or, more interestingly, a quantum metamaterial. In both cases we consider a sequence of two level atoms each with a characteristic resonant frequency ω0. The propagation features are controlled by the ratio of the pulse frequency ω over the dipole resonant frequency, i.e. on the quantity X=ω/ω0. We consider analytically two pulse limits, viz. the sharp line limit as well as the inhomogeneouly broadened case. In the first case we find that for pulse frequencies larger than ω0, i.e. for X>1 the SIT pulse may be fully stopped through absorption by the medium provided its time width exceeds a certain critical value. In the latter case of inhomogeneously broadened medium we find no such frequency restrictions provided the pulse is wide enough. As a result an SIT pulse can be arbitrarily arrested by the absorbing medium. This dispersion-induced pulse stopping is a manifestation of the quantum nature of the medium and of possible use in metamaterial applications. © 2020 Elsevier Ltd",
journal = "Chaos, Solitons and Fractals",
title = "Dispersive properties of self–induced transparency in two–level media",
volume = "143",
pages = "110611",
doi = "10.1016/j.chaos.2020.110611"
}

Ivić, Z., Čevizović, D., Pržulj, Ž., Lazarides, N.,& Tsironis, G. P.. (2021). Dispersive properties of self–induced transparency in two–level media. in Chaos, Solitons and Fractals, 143, 110611.
https://doi.org/10.1016/j.chaos.2020.110611

Ivić Z, Čevizović D, Pržulj Ž, Lazarides N, Tsironis GP. Dispersive properties of self–induced transparency in two–level media. in Chaos, Solitons and Fractals. 2021;143:110611.
doi:10.1016/j.chaos.2020.110611 .

Ivić, Zoran, Čevizović, Dalibor, Pržulj, Željko, Lazarides, Nikos, Tsironis, Giorgos P., "Dispersive properties of self–induced transparency in two–level media" in Chaos, Solitons and Fractals, 143 (2021):110611,
https://doi.org/10.1016/j.chaos.2020.110611 . .

TY  - CONF
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
AU  - Ivić, Zoran
AU  - Chizhov, Alexei
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9700
AB  - In this paper, we analyze the possible utilization of the short electromagnetic pulse for qubit state storage and for qubit manipulation. We analyze the properties of the electromagnetic pulse properties on characteristic preparation of the qubit register as well as on the pulse duration and determined the conditions under which it can be used as a medium for storing the qubit state, as well as for the qubit state manipulation. © 2021 IEEE.
PB  - IEEE
C3  - 20th International Symposium INFOTEH-JAHORINA (INFOTEH 2021)
T1  - Self induced transparency pulses in transmon base quantum metamaterials
SP  - 9400673
DO  - 10.1109/INFOTEH51037.2021.9400673
ER  - 

@conference{
author = "Čevizović, Dalibor and Pržulj, Željko and Ivić, Zoran and Chizhov, Alexei",
year = "2021",
abstract = "In this paper, we analyze the possible utilization of the short electromagnetic pulse for qubit state storage and for qubit manipulation. We analyze the properties of the electromagnetic pulse properties on characteristic preparation of the qubit register as well as on the pulse duration and determined the conditions under which it can be used as a medium for storing the qubit state, as well as for the qubit state manipulation. © 2021 IEEE.",
publisher = "IEEE",
journal = "20th International Symposium INFOTEH-JAHORINA (INFOTEH 2021)",
title = "Self induced transparency pulses in transmon base quantum metamaterials",
pages = "9400673",
doi = "10.1109/INFOTEH51037.2021.9400673"
}

Čevizović, D., Pržulj, Ž., Ivić, Z.,& Chizhov, A.. (2021). Self induced transparency pulses in transmon base quantum metamaterials. in 20th International Symposium INFOTEH-JAHORINA (INFOTEH 2021)
IEEE., 9400673.
https://doi.org/10.1109/INFOTEH51037.2021.9400673

Čevizović D, Pržulj Ž, Ivić Z, Chizhov A. Self induced transparency pulses in transmon base quantum metamaterials. in 20th International Symposium INFOTEH-JAHORINA (INFOTEH 2021). 2021;:9400673.
doi:10.1109/INFOTEH51037.2021.9400673 .

Čevizović, Dalibor, Pržulj, Željko, Ivić, Zoran, Chizhov, Alexei, "Self induced transparency pulses in transmon base quantum metamaterials" in 20th International Symposium INFOTEH-JAHORINA (INFOTEH 2021) (2021):9400673,
https://doi.org/10.1109/INFOTEH51037.2021.9400673 . .

TY  - JOUR
AU  - Mandilara, Aikaterini
AU  - Ivić, Zoran
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1846
AB  - We show that the self-induced transparency of optical phonons may appear in a systems consisting of a two level atoms interacting with elastic waves. The presence of the gap in phonon spectrum substantially enhances the pulse delay in respect to the acoustic self induced transparency phenomena. One of the main characteristics of the predicted phenomenon is the appearance of the critical velocity of the self-induced transparency pulse which, in the absorbing media, represents the upper limit which pulse may reach. Its magnitude is determined by the ratio of the phonon gap and the energy difference of the two level system. This feature opens a new way for the control of the speed of elastic waves. We believe that, in the view of the emerging new quantum technologies relying on creation and trapping of the coherent phonons interacting with artificial atoms, some practical implementations of interest for the storage and manipulation of quantum information may be realised on the basis of our work. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Chaos, Solitons and Fractals
T1  - Self-induced transparency of the optical phonons
VL  - 105
SP  - 14
EP  - 20
DO  - 10.1016/j.chaos.2017.10.002
ER  - 

@article{
author = "Mandilara, Aikaterini and Ivić, Zoran and Čevizović, Dalibor and Pržulj, Željko",
year = "2017",
abstract = "We show that the self-induced transparency of optical phonons may appear in a systems consisting of a two level atoms interacting with elastic waves. The presence of the gap in phonon spectrum substantially enhances the pulse delay in respect to the acoustic self induced transparency phenomena. One of the main characteristics of the predicted phenomenon is the appearance of the critical velocity of the self-induced transparency pulse which, in the absorbing media, represents the upper limit which pulse may reach. Its magnitude is determined by the ratio of the phonon gap and the energy difference of the two level system. This feature opens a new way for the control of the speed of elastic waves. We believe that, in the view of the emerging new quantum technologies relying on creation and trapping of the coherent phonons interacting with artificial atoms, some practical implementations of interest for the storage and manipulation of quantum information may be realised on the basis of our work. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Chaos, Solitons and Fractals",
title = "Self-induced transparency of the optical phonons",
volume = "105",
pages = "14-20",
doi = "10.1016/j.chaos.2017.10.002"
}

Mandilara, A., Ivić, Z., Čevizović, D.,& Pržulj, Ž.. (2017). Self-induced transparency of the optical phonons. in Chaos, Solitons and Fractals, 105, 14-20.
https://doi.org/10.1016/j.chaos.2017.10.002

Mandilara A, Ivić Z, Čevizović D, Pržulj Ž. Self-induced transparency of the optical phonons. in Chaos, Solitons and Fractals. 2017;105:14-20.
doi:10.1016/j.chaos.2017.10.002 .

Mandilara, Aikaterini, Ivić, Zoran, Čevizović, Dalibor, Pržulj, Željko, "Self-induced transparency of the optical phonons" in Chaos, Solitons and Fractals, 105 (2017):14-20,
https://doi.org/10.1016/j.chaos.2017.10.002 . .

TY  - JOUR
AU  - Čevizović, Dalibor
AU  - Ivić, Zoran
AU  - Toprek, Dragan
AU  - Pržulj, Željko
AU  - Kapor, Darko
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1275
AB  - We consider the properties of the large acoustic polarons in a media composed of three parallel coupled identical macromolecular chains in an equilateral triangular arrangement. The existence of the truly three-dimensional large polarons has been demonstrated. Their appearance demands the complex interference of the effects of the reduced dimensionality, the nature and strength of the interchain coupling and particular geometrical arrangement of molecular chains. Different types of solutions were found and criteria for their existence were formulated in terms of the dimensionless interchain coupling parameter. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Chaos, Solitons and Fractals
T1  - Large acoustic polaron states and bifurcation in three coupled parallel molecular chains
VL  - 91
SP  - 63
EP  - 68
DO  - 10.1016/j.chaos.2016.05.001
ER  - 

@article{
author = "Čevizović, Dalibor and Ivić, Zoran and Toprek, Dragan and Pržulj, Željko and Kapor, Darko",
year = "2016",
abstract = "We consider the properties of the large acoustic polarons in a media composed of three parallel coupled identical macromolecular chains in an equilateral triangular arrangement. The existence of the truly three-dimensional large polarons has been demonstrated. Their appearance demands the complex interference of the effects of the reduced dimensionality, the nature and strength of the interchain coupling and particular geometrical arrangement of molecular chains. Different types of solutions were found and criteria for their existence were formulated in terms of the dimensionless interchain coupling parameter. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Chaos, Solitons and Fractals",
title = "Large acoustic polaron states and bifurcation in three coupled parallel molecular chains",
volume = "91",
pages = "63-68",
doi = "10.1016/j.chaos.2016.05.001"
}

Čevizović, D., Ivić, Z., Toprek, D., Pržulj, Ž.,& Kapor, D.. (2016). Large acoustic polaron states and bifurcation in three coupled parallel molecular chains. in Chaos, Solitons and Fractals, 91, 63-68.
https://doi.org/10.1016/j.chaos.2016.05.001

Čevizović D, Ivić Z, Toprek D, Pržulj Ž, Kapor D. Large acoustic polaron states and bifurcation in three coupled parallel molecular chains. in Chaos, Solitons and Fractals. 2016;91:63-68.
doi:10.1016/j.chaos.2016.05.001 .

Čevizović, Dalibor, Ivić, Zoran, Toprek, Dragan, Pržulj, Željko, Kapor, Darko, "Large acoustic polaron states and bifurcation in three coupled parallel molecular chains" in Chaos, Solitons and Fractals, 91 (2016):63-68,
https://doi.org/10.1016/j.chaos.2016.05.001 . .

TY  - JOUR
AU  - Čevizović, Dalibor
AU  - Ivić, Zoran
AU  - Toprek, Dragan
AU  - Kapor, Darko
AU  - Pržulj, Željko
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/478
AB  - We study the properties of the single large adiabatic polaron in the substances composed of three parallel equally separated coplanar molecular chains. Particular attention has been devoted to the influence of the interchain coupling strength on polaron stability in order to elucidate the origin of the large polaron existence, which, contrary to the predictions of continuum adiabatic theories may persist in realistic conditions. Our results indicate the existence of the effectively two-dimensional stationary polarons with comparably large longitudinal radius while the transverse one ranges from zero, in the absence of interchain coupling, to approximately twice of the interchain separation when coupling strength tends towards the infinity. These two-dimensional polarons are both energetically and dynamically stable. This is quite the opposite to the expectations based on the traditional adiabatic large polaron theories which, in the case of short ranged electron phonon interaction, predict that the stable large polaron may exist only in 1D systems. Stability of these 2D polarons increases with the increase of the interchain coupling strength so that they may be comparably more stable than the pure 1D polarons. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Chaos, Solitons and Fractals
T1  - The influence of the interchain coupling on large acoustic polarons in coupled molecular chains: Three coplanar parallel molecular chains
VL  - 73
SP  - 71
EP  - 79
DO  - 10.1016/j.chaos.2015.01.002
ER  - 

@article{
author = "Čevizović, Dalibor and Ivić, Zoran and Toprek, Dragan and Kapor, Darko and Pržulj, Željko",
year = "2015",
abstract = "We study the properties of the single large adiabatic polaron in the substances composed of three parallel equally separated coplanar molecular chains. Particular attention has been devoted to the influence of the interchain coupling strength on polaron stability in order to elucidate the origin of the large polaron existence, which, contrary to the predictions of continuum adiabatic theories may persist in realistic conditions. Our results indicate the existence of the effectively two-dimensional stationary polarons with comparably large longitudinal radius while the transverse one ranges from zero, in the absence of interchain coupling, to approximately twice of the interchain separation when coupling strength tends towards the infinity. These two-dimensional polarons are both energetically and dynamically stable. This is quite the opposite to the expectations based on the traditional adiabatic large polaron theories which, in the case of short ranged electron phonon interaction, predict that the stable large polaron may exist only in 1D systems. Stability of these 2D polarons increases with the increase of the interchain coupling strength so that they may be comparably more stable than the pure 1D polarons. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Chaos, Solitons and Fractals",
title = "The influence of the interchain coupling on large acoustic polarons in coupled molecular chains: Three coplanar parallel molecular chains",
volume = "73",
pages = "71-79",
doi = "10.1016/j.chaos.2015.01.002"
}

Čevizović, D., Ivić, Z., Toprek, D., Kapor, D.,& Pržulj, Ž.. (2015). The influence of the interchain coupling on large acoustic polarons in coupled molecular chains: Three coplanar parallel molecular chains. in Chaos, Solitons and Fractals, 73, 71-79.
https://doi.org/10.1016/j.chaos.2015.01.002

Čevizović D, Ivić Z, Toprek D, Kapor D, Pržulj Ž. The influence of the interchain coupling on large acoustic polarons in coupled molecular chains: Three coplanar parallel molecular chains. in Chaos, Solitons and Fractals. 2015;73:71-79.
doi:10.1016/j.chaos.2015.01.002 .

Čevizović, Dalibor, Ivić, Zoran, Toprek, Dragan, Kapor, Darko, Pržulj, Željko, "The influence of the interchain coupling on large acoustic polarons in coupled molecular chains: Three coplanar parallel molecular chains" in Chaos, Solitons and Fractals, 73 (2015):71-79,
https://doi.org/10.1016/j.chaos.2015.01.002 . .

TY  - JOUR
AU  - Čevizović, Dalibor
AU  - Ivić, Zoran
AU  - Pržulj, Željko
AU  - Tekić, Jasmina
AU  - Kapor, Darko
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5764
AB  - We examine the effects of the interchain coupling on the properties of the large adiabatic polaron in the two chain model. In dependence of the strength of the interchain coupling (gamma) two different types of polaron solutions were found. In the weak coupling regime (gamma LT 1/2), polaron is confined to a single chain. As coupling increases continual transition towards the delocalization takes place - polaron amplitudes on both chains gradually become equalized, in the same time, its binding energy vanishes. Finally, above the critical coupling strength, polaron is fully delocalized - equally distributed over the both chains while its energy lies within the band of free states. Our the most specific prediction is the substantial impact of the polaron motion on its character. This implies the emergence of the two different regimes in charge transfer processes which may be experimentally verified. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Chemical Physics
T1  - Interchain coupling effects on large acoustic polaron in two parallel molecular chains
VL  - 426
SP  - 9
EP  - 15
DO  - 10.1016/j.chemphys.2013.09.005
ER  - 

@article{
author = "Čevizović, Dalibor and Ivić, Zoran and Pržulj, Željko and Tekić, Jasmina and Kapor, Darko",
year = "2013",
abstract = "We examine the effects of the interchain coupling on the properties of the large adiabatic polaron in the two chain model. In dependence of the strength of the interchain coupling (gamma) two different types of polaron solutions were found. In the weak coupling regime (gamma LT 1/2), polaron is confined to a single chain. As coupling increases continual transition towards the delocalization takes place - polaron amplitudes on both chains gradually become equalized, in the same time, its binding energy vanishes. Finally, above the critical coupling strength, polaron is fully delocalized - equally distributed over the both chains while its energy lies within the band of free states. Our the most specific prediction is the substantial impact of the polaron motion on its character. This implies the emergence of the two different regimes in charge transfer processes which may be experimentally verified. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Chemical Physics",
title = "Interchain coupling effects on large acoustic polaron in two parallel molecular chains",
volume = "426",
pages = "9-15",
doi = "10.1016/j.chemphys.2013.09.005"
}

Čevizović, D., Ivić, Z., Pržulj, Ž., Tekić, J.,& Kapor, D.. (2013). Interchain coupling effects on large acoustic polaron in two parallel molecular chains. in Chemical Physics, 426, 9-15.
https://doi.org/10.1016/j.chemphys.2013.09.005

Čevizović D, Ivić Z, Pržulj Ž, Tekić J, Kapor D. Interchain coupling effects on large acoustic polaron in two parallel molecular chains. in Chemical Physics. 2013;426:9-15.
doi:10.1016/j.chemphys.2013.09.005 .

Čevizović, Dalibor, Ivić, Zoran, Pržulj, Željko, Tekić, Jasmina, Kapor, Darko, "Interchain coupling effects on large acoustic polaron in two parallel molecular chains" in Chemical Physics, 426 (2013):9-15,
https://doi.org/10.1016/j.chemphys.2013.09.005 . .

TY  - JOUR
AU  - Pržulj, Željko
AU  - Ivić, Zoran
AU  - Kapor, Darko
AU  - Tekić, Jasmina
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4789
AB  - Large adiabatic polarons in anisotropic crystals in the presence of constant magnetic field have been studied within the Holstein molecular crystal model in the continuum approximation. It was shown that magnetic field directed along the symmetry axis induces transverse confinement which may stabilize large polarons. They represent localized (soliton-like) nonlinear structure uniformly propagating along the symmetry axis and rotating around it in the same time. Such objects exist in 3D lattice provided that coupling constant and magnetic field do not exceed certain critical values. In contrast with pure 1D systems existence of large polarons is possible in a quite wider region of the values of coupling constant which may attain considerably higher values than in the pure 1D media. Furthermore, polaron effective mass, depending on the intensity of the applied magnetic field, may be considerably lighter than that of the the pure 1D polarons for the same values of coupling constant. This is the most significant difference with respect to pure 1D systems in the absence of magnetic field and may have substantial impact on polaron transport properties.
T2  - European Physical Journal B. Condensed Matter and Complex Systems
T1  - Stationary soliton solutions for large adiabatic Holstein polaron in magnetic field in anisotropic solids
VL  - 85
IS  - 3
DO  - 10.1140/epjb/e2012-20782-2
ER  - 

@article{
author = "Pržulj, Željko and Ivić, Zoran and Kapor, Darko and Tekić, Jasmina",
year = "2012",
abstract = "Large adiabatic polarons in anisotropic crystals in the presence of constant magnetic field have been studied within the Holstein molecular crystal model in the continuum approximation. It was shown that magnetic field directed along the symmetry axis induces transverse confinement which may stabilize large polarons. They represent localized (soliton-like) nonlinear structure uniformly propagating along the symmetry axis and rotating around it in the same time. Such objects exist in 3D lattice provided that coupling constant and magnetic field do not exceed certain critical values. In contrast with pure 1D systems existence of large polarons is possible in a quite wider region of the values of coupling constant which may attain considerably higher values than in the pure 1D media. Furthermore, polaron effective mass, depending on the intensity of the applied magnetic field, may be considerably lighter than that of the the pure 1D polarons for the same values of coupling constant. This is the most significant difference with respect to pure 1D systems in the absence of magnetic field and may have substantial impact on polaron transport properties.",
journal = "European Physical Journal B. Condensed Matter and Complex Systems",
title = "Stationary soliton solutions for large adiabatic Holstein polaron in magnetic field in anisotropic solids",
volume = "85",
number = "3",
doi = "10.1140/epjb/e2012-20782-2"
}

Pržulj, Ž., Ivić, Z., Kapor, D.,& Tekić, J.. (2012). Stationary soliton solutions for large adiabatic Holstein polaron in magnetic field in anisotropic solids. in European Physical Journal B. Condensed Matter and Complex Systems, 85(3).
https://doi.org/10.1140/epjb/e2012-20782-2

Pržulj Ž, Ivić Z, Kapor D, Tekić J. Stationary soliton solutions for large adiabatic Holstein polaron in magnetic field in anisotropic solids. in European Physical Journal B. Condensed Matter and Complex Systems. 2012;85(3).
doi:10.1140/epjb/e2012-20782-2 .

Pržulj, Željko, Ivić, Zoran, Kapor, Darko, Tekić, Jasmina, "Stationary soliton solutions for large adiabatic Holstein polaron in magnetic field in anisotropic solids" in European Physical Journal B. Condensed Matter and Complex Systems, 85, no. 3 (2012),
https://doi.org/10.1140/epjb/e2012-20782-2 . .

TY  - JOUR
AU  - Vosika, Zoran
AU  - Pržulj, Željko
AU  - Hadžievski, Ljupčo
AU  - Ivić, Zoran
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3727
AB  - The features of the moving large polaron are investigated within Holsteins molecular crystal model. The necessity to account for the phonon dispersion is emphasized and its impact on polaron properties is examined in detail. It was found that the large polaron dynamics is described by the nonlocal nonlinear Schrodinger equation. The character of its solutions is determined by the degree of nonlocality, which is specified by the polaron velocity and group velocity of the lattice modes. An analytic solution for the polaron wavefunction is obtained in the weakly nonlocal limit. It was found that the polaron velocity and phonon dispersion have a significant impact on the parameters and dynamics of large polarons. The polaron amplitude and effective mass increase while its spatial extent decreases with a rise in the degree of nonlocality. The criterion for the stability of large polaron is formulated in terms of the values of the degree of nonlocality, the magnitude of the basic energy parameters of the system and the polaron velocity. It turns out that the large polaron velocity cannot exceed a relatively small limiting value. A similar limitation on large polaron velocity has not been found in previous studies. The consequences of these results on polaron dynamics in realistic conditions are discussed.
T2  - Journal of Physics: Condensed Matter
T1  - Properties of the moving Holstein large polaron in one-dimensional molecular crystals
VL  - 21
IS  - 27
DO  - 10.1088/0953-8984/21/27/275404
ER  - 

@article{
author = "Vosika, Zoran and Pržulj, Željko and Hadžievski, Ljupčo and Ivić, Zoran",
year = "2009",
abstract = "The features of the moving large polaron are investigated within Holsteins molecular crystal model. The necessity to account for the phonon dispersion is emphasized and its impact on polaron properties is examined in detail. It was found that the large polaron dynamics is described by the nonlocal nonlinear Schrodinger equation. The character of its solutions is determined by the degree of nonlocality, which is specified by the polaron velocity and group velocity of the lattice modes. An analytic solution for the polaron wavefunction is obtained in the weakly nonlocal limit. It was found that the polaron velocity and phonon dispersion have a significant impact on the parameters and dynamics of large polarons. The polaron amplitude and effective mass increase while its spatial extent decreases with a rise in the degree of nonlocality. The criterion for the stability of large polaron is formulated in terms of the values of the degree of nonlocality, the magnitude of the basic energy parameters of the system and the polaron velocity. It turns out that the large polaron velocity cannot exceed a relatively small limiting value. A similar limitation on large polaron velocity has not been found in previous studies. The consequences of these results on polaron dynamics in realistic conditions are discussed.",
journal = "Journal of Physics: Condensed Matter",
title = "Properties of the moving Holstein large polaron in one-dimensional molecular crystals",
volume = "21",
number = "27",
doi = "10.1088/0953-8984/21/27/275404"
}

Vosika, Z., Pržulj, Ž., Hadžievski, L.,& Ivić, Z.. (2009). Properties of the moving Holstein large polaron in one-dimensional molecular crystals. in Journal of Physics: Condensed Matter, 21(27).
https://doi.org/10.1088/0953-8984/21/27/275404

Vosika Z, Pržulj Ž, Hadžievski L, Ivić Z. Properties of the moving Holstein large polaron in one-dimensional molecular crystals. in Journal of Physics: Condensed Matter. 2009;21(27).
doi:10.1088/0953-8984/21/27/275404 .

Vosika, Zoran, Pržulj, Željko, Hadžievski, Ljupčo, Ivić, Zoran, "Properties of the moving Holstein large polaron in one-dimensional molecular crystals" in Journal of Physics: Condensed Matter, 21, no. 27 (2009),
https://doi.org/10.1088/0953-8984/21/27/275404 . .

TY  - JOUR
AU  - Pržulj, Željko
AU  - Čevizović, Dalibor
AU  - Zeković, Slobodan
AU  - Ivić, Zoran
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3511
AB  - The temperature dependence of the position of the so-called anomalous band peaked at 1650 cm(-1) in the IR-absorption spectrum of crystalline acetanilide (ACN) is theoretically investigated within the small-polaron theory. Its pronounced shift towards the position of the normal band is predicted with the rise of temperature. Interpretation of the IR-absorption spectra in terms of small-polaron model has been critically assessed on the basis of these results. (c) 2008 Elsevier B. V. All rights reserved.
T2  - Chemical Physics Letters
T1  - Infrared absorption spectra of molecular crystals: Possible evidence for small-polaron formation?
VL  - 462
IS  - 4-6
SP  - 213
EP  - 216
DO  - 10.1016/j.cplett.2008.07.081
ER  - 

@article{
author = "Pržulj, Željko and Čevizović, Dalibor and Zeković, Slobodan and Ivić, Zoran",
year = "2008",
abstract = "The temperature dependence of the position of the so-called anomalous band peaked at 1650 cm(-1) in the IR-absorption spectrum of crystalline acetanilide (ACN) is theoretically investigated within the small-polaron theory. Its pronounced shift towards the position of the normal band is predicted with the rise of temperature. Interpretation of the IR-absorption spectra in terms of small-polaron model has been critically assessed on the basis of these results. (c) 2008 Elsevier B. V. All rights reserved.",
journal = "Chemical Physics Letters",
title = "Infrared absorption spectra of molecular crystals: Possible evidence for small-polaron formation?",
volume = "462",
number = "4-6",
pages = "213-216",
doi = "10.1016/j.cplett.2008.07.081"
}

Pržulj, Ž., Čevizović, D., Zeković, S.,& Ivić, Z.. (2008). Infrared absorption spectra of molecular crystals: Possible evidence for small-polaron formation?. in Chemical Physics Letters, 462(4-6), 213-216.
https://doi.org/10.1016/j.cplett.2008.07.081

Pržulj Ž, Čevizović D, Zeković S, Ivić Z. Infrared absorption spectra of molecular crystals: Possible evidence for small-polaron formation?. in Chemical Physics Letters. 2008;462(4-6):213-216.
doi:10.1016/j.cplett.2008.07.081 .

Pržulj, Željko, Čevizović, Dalibor, Zeković, Slobodan, Ivić, Zoran, "Infrared absorption spectra of molecular crystals: Possible evidence for small-polaron formation?" in Chemical Physics Letters, 462, no. 4-6 (2008):213-216,
https://doi.org/10.1016/j.cplett.2008.07.081 . .

TY  - JOUR
AU  - Čevizović, Dalibor
AU  - Zeković, Slobodan
AU  - Ivić, Zoran
AU  - Pržulj, Željko
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3110
AB  - Possible modification of the phonon spectra due to the presence of small-polaron arising on account of vibron (amid-I quanta) self-trapping in hydrogen-bonded molecular chains is discussed. We predict that small-polaron effect should produce characteristic temperature variation of phonon frequencies and small-polaron binding energy. These effects should be observed in the experiments such as measurements of the speed of sound and infrared absorption spectra of molecular crystals which open an interesting possibility for the indirect confirmation of the existence of self-trapped states in molecular chains. Infrared absorption spectra may be especially interesting in that sense since the anticipated temperature variation of binding energy would be observed as a shift of the position of the unconventional (temperature dependent) peak in the IR absorption spectrum towards the position of the normal (temperature independent) one. (c) 2006 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Modification of phonon spectra due to vibron self-trapping in molecular crystals
VL  - 358
IS  - 5-6
SP  - 457
EP  - 462
DO  - 10.1016/j.physleta.2006.05.091
ER  - 

@article{
author = "Čevizović, Dalibor and Zeković, Slobodan and Ivić, Zoran and Pržulj, Željko",
year = "2006",
abstract = "Possible modification of the phonon spectra due to the presence of small-polaron arising on account of vibron (amid-I quanta) self-trapping in hydrogen-bonded molecular chains is discussed. We predict that small-polaron effect should produce characteristic temperature variation of phonon frequencies and small-polaron binding energy. These effects should be observed in the experiments such as measurements of the speed of sound and infrared absorption spectra of molecular crystals which open an interesting possibility for the indirect confirmation of the existence of self-trapped states in molecular chains. Infrared absorption spectra may be especially interesting in that sense since the anticipated temperature variation of binding energy would be observed as a shift of the position of the unconventional (temperature dependent) peak in the IR absorption spectrum towards the position of the normal (temperature independent) one. (c) 2006 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Modification of phonon spectra due to vibron self-trapping in molecular crystals",
volume = "358",
number = "5-6",
pages = "457-462",
doi = "10.1016/j.physleta.2006.05.091"
}

Čevizović, D., Zeković, S., Ivić, Z.,& Pržulj, Ž.. (2006). Modification of phonon spectra due to vibron self-trapping in molecular crystals. in Physics Letters A, 358(5-6), 457-462.
https://doi.org/10.1016/j.physleta.2006.05.091

Čevizović D, Zeković S, Ivić Z, Pržulj Ž. Modification of phonon spectra due to vibron self-trapping in molecular crystals. in Physics Letters A. 2006;358(5-6):457-462.
doi:10.1016/j.physleta.2006.05.091 .

Čevizović, Dalibor, Zeković, Slobodan, Ivić, Zoran, Pržulj, Željko, "Modification of phonon spectra due to vibron self-trapping in molecular crystals" in Physics Letters A, 358, no. 5-6 (2006):457-462,
https://doi.org/10.1016/j.physleta.2006.05.091 . .

TY  - JOUR
AU  - Kapor, Darko
AU  - Škrinjar, Mario J.
AU  - Ivić, Zoran
AU  - Pržulj, Željko
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2969
AB  - The validity of the recently proposed tentative improvement of the Davydov theory of intramolecular vibrational transfer is discussed. It is shown that it contains a few principal shortcomings and cannot be a sound ground for studies of the transport processes in molecular systems.
T2  - Physical Review E
T1  - Comment on Improvement of the Davydov theory of bioenergy transport in protein molecular systems
VL  - 73
IS  - 1
DO  - 10.1103/PhysRevE.73.013901
ER  - 

@article{
author = "Kapor, Darko and Škrinjar, Mario J. and Ivić, Zoran and Pržulj, Željko",
year = "2006",
abstract = "The validity of the recently proposed tentative improvement of the Davydov theory of intramolecular vibrational transfer is discussed. It is shown that it contains a few principal shortcomings and cannot be a sound ground for studies of the transport processes in molecular systems.",
journal = "Physical Review E",
title = "Comment on Improvement of the Davydov theory of bioenergy transport in protein molecular systems",
volume = "73",
number = "1",
doi = "10.1103/PhysRevE.73.013901"
}

Kapor, D., Škrinjar, M. J., Ivić, Z.,& Pržulj, Ž.. (2006). Comment on Improvement of the Davydov theory of bioenergy transport in protein molecular systems. in Physical Review E, 73(1).
https://doi.org/10.1103/PhysRevE.73.013901

Kapor D, Škrinjar MJ, Ivić Z, Pržulj Ž. Comment on Improvement of the Davydov theory of bioenergy transport in protein molecular systems. in Physical Review E. 2006;73(1).
doi:10.1103/PhysRevE.73.013901 .

Kapor, Darko, Škrinjar, Mario J., Ivić, Zoran, Pržulj, Željko, "Comment on Improvement of the Davydov theory of bioenergy transport in protein molecular systems" in Physical Review E, 73, no. 1 (2006),
https://doi.org/10.1103/PhysRevE.73.013901 . .

TY  - CONF
AU  - Ivić, Zoran
AU  - Čevizović, Dalibor
AU  - Pržulj, Željko
AU  - Zeković, Slobodan
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12905
AB  - We study the conductivity of the linear molecular chains taking into account the changes of phonon spectra due to the small–polaron effect. It was found that the phonon hardening may lead to a considerable enhancement of the band as well as hopping conductivity. Character and the degree of these changes are determined by the values of the basic physical parameters of system, coupling constant and adiabatic parameter, and temperature as well. In particular: the increase of adiabatic parameter intensifies the hardening of phonon spectrum which in turn leads to a significant increase of the small–polaron conductivity. Quite on the contrary the increase of the coupling constant has the opposite tendency. The rise of temperature has practically the same consequences. This is the consequence of the increase of the effective coupling constant with the rise of temperature.
C3  - SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers
T1  - The Influence of the Small–Polaron Induced Phonon Hardening of Phonon Spectra on Electric Conductivity of Quasi–one Dimensional Molecular Crystals
SP  - 165
EP  - 168
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12905
ER  - 

@conference{
author = "Ivić, Zoran and Čevizović, Dalibor and Pržulj, Željko and Zeković, Slobodan",
year = "2004",
abstract = "We study the conductivity of the linear molecular chains taking into account the changes of phonon spectra due to the small–polaron effect. It was found that the phonon hardening may lead to a considerable enhancement of the band as well as hopping conductivity. Character and the degree of these changes are determined by the values of the basic physical parameters of system, coupling constant and adiabatic parameter, and temperature as well. In particular: the increase of adiabatic parameter intensifies the hardening of phonon spectrum which in turn leads to a significant increase of the small–polaron conductivity. Quite on the contrary the increase of the coupling constant has the opposite tendency. The rise of temperature has practically the same consequences. This is the consequence of the increase of the effective coupling constant with the rise of temperature.",
journal = "SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers",
title = "The Influence of the Small–Polaron Induced Phonon Hardening of Phonon Spectra on Electric Conductivity of Quasi–one Dimensional Molecular Crystals",
pages = "165-168",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12905"
}

Ivić, Z., Čevizović, D., Pržulj, Ž.,& Zeković, S.. (2004). The Influence of the Small–Polaron Induced Phonon Hardening of Phonon Spectra on Electric Conductivity of Quasi–one Dimensional Molecular Crystals. in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers, 165-168.
https://hdl.handle.net/21.15107/rcub_vinar_12905

Ivić Z, Čevizović D, Pržulj Ž, Zeković S. The Influence of the Small–Polaron Induced Phonon Hardening of Phonon Spectra on Electric Conductivity of Quasi–one Dimensional Molecular Crystals. in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers. 2004;:165-168.
https://hdl.handle.net/21.15107/rcub_vinar_12905 .

Ivić, Zoran, Čevizović, Dalibor, Pržulj, Željko, Zeković, Slobodan, "The Influence of the Small–Polaron Induced Phonon Hardening of Phonon Spectra on Electric Conductivity of Quasi–one Dimensional Molecular Crystals" in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers (2004):165-168,
https://hdl.handle.net/21.15107/rcub_vinar_12905 .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Vujicic, G
AU  - Pržulj, Željko
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2670
AB  - We study the possible influence of polaron effect on the phonon spectrum in quasi-one-dimensional molecular chains. It was found that polaron induced phonon correlations may lead to the characteristic modifications of the phonon frequencies and speed of sound which shows specific temperature dependence for particular type of polaron. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Polaron induced modification of the speed of sound in quasi-one-dimensional molecular crystals
VL  - 316
IS  - 1-2
SP  - 126
EP  - 134
DO  - 10.1016/S0375-9601(03)01139-3
ER  - 

@article{
author = "Ivić, Zoran and Vujicic, G and Pržulj, Željko",
year = "2003",
abstract = "We study the possible influence of polaron effect on the phonon spectrum in quasi-one-dimensional molecular chains. It was found that polaron induced phonon correlations may lead to the characteristic modifications of the phonon frequencies and speed of sound which shows specific temperature dependence for particular type of polaron. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Polaron induced modification of the speed of sound in quasi-one-dimensional molecular crystals",
volume = "316",
number = "1-2",
pages = "126-134",
doi = "10.1016/S0375-9601(03)01139-3"
}

Ivić, Z., Vujicic, G.,& Pržulj, Ž.. (2003). Polaron induced modification of the speed of sound in quasi-one-dimensional molecular crystals. in Physics Letters A, 316(1-2), 126-134.
https://doi.org/10.1016/S0375-9601(03)01139-3

Ivić Z, Vujicic G, Pržulj Ž. Polaron induced modification of the speed of sound in quasi-one-dimensional molecular crystals. in Physics Letters A. 2003;316(1-2):126-134.
doi:10.1016/S0375-9601(03)01139-3 .

Ivić, Zoran, Vujicic, G, Pržulj, Željko, "Polaron induced modification of the speed of sound in quasi-one-dimensional molecular crystals" in Physics Letters A, 316, no. 1-2 (2003):126-134,
https://doi.org/10.1016/S0375-9601(03)01139-3 . .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Zeković, Slobodan
AU  - Pržulj, Željko
PY  - 2002
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2599
AB  - Finite temperature dynamics and stability of the adiabatic large acoustic polaron in one-dimensional systems have been examined by means of the perturbation method based upon the inverse scattering transform. Polaron life-time was estimated in dependence of temperature and electron (exciton)-phonon coupling constant. (C) 2002 Elsevier Science B.V. All rights reserved.
T2  - Physics Letters A
T1  - Radiative decay of the one-dimensional large acoustic polaron
VL  - 306
IS  - 2-3
SP  - 144
EP  - 152
DO  - 10.1016/S0375-9601(02)01554-2
ER  - 

@article{
author = "Ivić, Zoran and Zeković, Slobodan and Pržulj, Željko",
year = "2002",
abstract = "Finite temperature dynamics and stability of the adiabatic large acoustic polaron in one-dimensional systems have been examined by means of the perturbation method based upon the inverse scattering transform. Polaron life-time was estimated in dependence of temperature and electron (exciton)-phonon coupling constant. (C) 2002 Elsevier Science B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Radiative decay of the one-dimensional large acoustic polaron",
volume = "306",
number = "2-3",
pages = "144-152",
doi = "10.1016/S0375-9601(02)01554-2"
}

Ivić, Z., Zeković, S.,& Pržulj, Ž.. (2002). Radiative decay of the one-dimensional large acoustic polaron. in Physics Letters A, 306(2-3), 144-152.
https://doi.org/10.1016/S0375-9601(02)01554-2

Ivić Z, Zeković S, Pržulj Ž. Radiative decay of the one-dimensional large acoustic polaron. in Physics Letters A. 2002;306(2-3):144-152.
doi:10.1016/S0375-9601(02)01554-2 .

Ivić, Zoran, Zeković, Slobodan, Pržulj, Željko, "Radiative decay of the one-dimensional large acoustic polaron" in Physics Letters A, 306, no. 2-3 (2002):144-152,
https://doi.org/10.1016/S0375-9601(02)01554-2 . .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Pržulj, Željko
AU  - Kostić, Dragan
PY  - 2000
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2352
AB  - Dynamics and the stability of the multivibron solitons in molecular chains have been examined by means of the perturbation method based upon the inverse scattering transform. We demonstrate that due to the coupling with phonons the soliton radiates energy which causes its slowing down and gradual decay of its amplitude. It was shown that the soliton lifetime depends strongly on temperature and the values of the basic physical parameters of the system. On the basis of these results the possible role of the multivibron solitons in the intramolecular vibrational energy transfer has been critically assessed.
T2  - Physical Review E
T1  - Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains
VL  - 61
IS  - 6
SP  - 6963
EP  - 6970
DO  - 10.1103/PhysRevE.61.6963
ER  - 

@article{
author = "Ivić, Zoran and Pržulj, Željko and Kostić, Dragan",
year = "2000",
abstract = "Dynamics and the stability of the multivibron solitons in molecular chains have been examined by means of the perturbation method based upon the inverse scattering transform. We demonstrate that due to the coupling with phonons the soliton radiates energy which causes its slowing down and gradual decay of its amplitude. It was shown that the soliton lifetime depends strongly on temperature and the values of the basic physical parameters of the system. On the basis of these results the possible role of the multivibron solitons in the intramolecular vibrational energy transfer has been critically assessed.",
journal = "Physical Review E",
title = "Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains",
volume = "61",
number = "6",
pages = "6963-6970",
doi = "10.1103/PhysRevE.61.6963"
}

Ivić, Z., Pržulj, Ž.,& Kostić, D.. (2000). Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains. in Physical Review E, 61(6), 6963-6970.
https://doi.org/10.1103/PhysRevE.61.6963

Ivić Z, Pržulj Ž, Kostić D. Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains. in Physical Review E. 2000;61(6):6963-6970.
doi:10.1103/PhysRevE.61.6963 .

Ivić, Zoran, Pržulj, Željko, Kostić, Dragan, "Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains" in Physical Review E, 61, no. 6 (2000):6963-6970,
https://doi.org/10.1103/PhysRevE.61.6963 . .

TY  - JOUR
AU  - Tekić, Jasmina
AU  - Ivić, Zoran
AU  - Zeković, Slobodan
AU  - Pržulj, Željko
PY  - 1999
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2265
AB  - The Fokker-Planck equation for multivibron solitons interacting with lattice vibrations in a molecular chain has been derived by means of the nonequilibrium statistical operator method. It was shown that a soliton undergoes diffusive motion characterized by two substantially different diffusion coefficients. The first one corresponds to the ordinary: (Einsteinian or dissipative) diffusion and characterizes the soliton Brownian motion, while the second one corresponds to the anomalous diffusion connected with frictionless displacement of the soliton center of mass coordinate due to the interaction with phonons. Both processes are the consequence of the Cherenkov-like radiation of phonon quanta arising when soliton velocity approaches the phase speed of sound. [S1063-651X(99)01707-9].
T2  - Physical Review E
T1  - Kinetic properties of multiquanta Davydov-like solitons in molecular chains
VL  - 60
IS  - 1
SP  - 821
EP  - 825
DO  - 10.1103/PhysRevE.60.821
ER  - 

@article{
author = "Tekić, Jasmina and Ivić, Zoran and Zeković, Slobodan and Pržulj, Željko",
year = "1999",
abstract = "The Fokker-Planck equation for multivibron solitons interacting with lattice vibrations in a molecular chain has been derived by means of the nonequilibrium statistical operator method. It was shown that a soliton undergoes diffusive motion characterized by two substantially different diffusion coefficients. The first one corresponds to the ordinary: (Einsteinian or dissipative) diffusion and characterizes the soliton Brownian motion, while the second one corresponds to the anomalous diffusion connected with frictionless displacement of the soliton center of mass coordinate due to the interaction with phonons. Both processes are the consequence of the Cherenkov-like radiation of phonon quanta arising when soliton velocity approaches the phase speed of sound. [S1063-651X(99)01707-9].",
journal = "Physical Review E",
title = "Kinetic properties of multiquanta Davydov-like solitons in molecular chains",
volume = "60",
number = "1",
pages = "821-825",
doi = "10.1103/PhysRevE.60.821"
}

Tekić, J., Ivić, Z., Zeković, S.,& Pržulj, Ž.. (1999). Kinetic properties of multiquanta Davydov-like solitons in molecular chains. in Physical Review E, 60(1), 821-825.
https://doi.org/10.1103/PhysRevE.60.821

Tekić J, Ivić Z, Zeković S, Pržulj Ž. Kinetic properties of multiquanta Davydov-like solitons in molecular chains. in Physical Review E. 1999;60(1):821-825.
doi:10.1103/PhysRevE.60.821 .

Tekić, Jasmina, Ivić, Zoran, Zeković, Slobodan, Pržulj, Željko, "Kinetic properties of multiquanta Davydov-like solitons in molecular chains" in Physical Review E, 60, no. 1 (1999):821-825,
https://doi.org/10.1103/PhysRevE.60.821 . .

TY  - JOUR
AU  - Pržulj, Željko
AU  - Kostić, Dragan
AU  - Ivić, Zoran
PY  - 1998
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2181
AB  - The problem of the existence and stability of various types of self-trapped (ST) states (polarons) in 1-d molecular systems has been analysed within the framework of the general theory of self-trapping phenomena. An interpolation method is applied to cover the whole range of system parameters. In the system phase diagram we specify the areas where different ST states may exist. The role of the soliton mechanism in the energy and charge transport in biological systems has been critically revised on the basis of these results.
T2  - Solid State Phenomena
T1  - Classification and existence of polarons and solitons in molecular chains: Phase diagram
VL  - 61-2
SP  - 291
EP  - 294
DO  - 10.4028/www.scientific.net/ssp.61-62.291
UR  - https://hdl.handle.net/21.15107/rcub_vinar_2181
ER  - 

@article{
author = "Pržulj, Željko and Kostić, Dragan and Ivić, Zoran",
year = "1998",
abstract = "The problem of the existence and stability of various types of self-trapped (ST) states (polarons) in 1-d molecular systems has been analysed within the framework of the general theory of self-trapping phenomena. An interpolation method is applied to cover the whole range of system parameters. In the system phase diagram we specify the areas where different ST states may exist. The role of the soliton mechanism in the energy and charge transport in biological systems has been critically revised on the basis of these results.",
journal = "Solid State Phenomena",
title = "Classification and existence of polarons and solitons in molecular chains: Phase diagram",
volume = "61-2",
pages = "291-294",
doi = "10.4028/www.scientific.net/ssp.61-62.291",
url = "https://hdl.handle.net/21.15107/rcub_vinar_2181"
}

Pržulj, Ž., Kostić, D.,& Ivić, Z.. (1998). Classification and existence of polarons and solitons in molecular chains: Phase diagram. in Solid State Phenomena, 61-2, 291-294.
https://doi.org/10.4028/www.scientific.net/ssp.61-62.291
https://hdl.handle.net/21.15107/rcub_vinar_2181

Pržulj Ž, Kostić D, Ivić Z. Classification and existence of polarons and solitons in molecular chains: Phase diagram. in Solid State Phenomena. 1998;61-2:291-294.
doi:10.4028/www.scientific.net/ssp.61-62.291
https://hdl.handle.net/21.15107/rcub_vinar_2181 .

Pržulj, Željko, Kostić, Dragan, Ivić, Zoran, "Classification and existence of polarons and solitons in molecular chains: Phase diagram" in Solid State Phenomena, 61-2 (1998):291-294,
https://doi.org/10.4028/www.scientific.net/ssp.61-62.291 .,
https://hdl.handle.net/21.15107/rcub_vinar_2181 .

TY  - JOUR
AU  - Tekić, Jasmina
AU  - Ivić, Zoran
AU  - Pržulj, Željko
PY  - 1998
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2114
AB  - The influence of the anharmonic vibron-phonon coupling, arising on account of a dressing effect, on the characteristics of the lattice subsystem in quasi-one-dimensional molecular crystals was examined within the pseudo-harmonic phonon approximation. It was found that solitons could induce specific modifications of the speed of sound which shows a temperature dependence quite different to that in the case of the linear excitations. The possibility of an indirect experimental verification of the existence of solitons in molecular chains is suggested on the basis of these predictions.
T2  - Journal of Physics: Condensed Matter
T1  - Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals
VL  - 10
IS  - 7
SP  - 1487
EP  - 1494
DO  - 10.1088/0953-8984/10/7/003
ER  - 

@article{
author = "Tekić, Jasmina and Ivić, Zoran and Pržulj, Željko",
year = "1998",
abstract = "The influence of the anharmonic vibron-phonon coupling, arising on account of a dressing effect, on the characteristics of the lattice subsystem in quasi-one-dimensional molecular crystals was examined within the pseudo-harmonic phonon approximation. It was found that solitons could induce specific modifications of the speed of sound which shows a temperature dependence quite different to that in the case of the linear excitations. The possibility of an indirect experimental verification of the existence of solitons in molecular chains is suggested on the basis of these predictions.",
journal = "Journal of Physics: Condensed Matter",
title = "Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals",
volume = "10",
number = "7",
pages = "1487-1494",
doi = "10.1088/0953-8984/10/7/003"
}

Tekić, J., Ivić, Z.,& Pržulj, Ž.. (1998). Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals. in Journal of Physics: Condensed Matter, 10(7), 1487-1494.
https://doi.org/10.1088/0953-8984/10/7/003

Tekić J, Ivić Z, Pržulj Ž. Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals. in Journal of Physics: Condensed Matter. 1998;10(7):1487-1494.
doi:10.1088/0953-8984/10/7/003 .

Tekić, Jasmina, Ivić, Zoran, Pržulj, Željko, "Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals" in Journal of Physics: Condensed Matter, 10, no. 7 (1998):1487-1494,
https://doi.org/10.1088/0953-8984/10/7/003 . .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Kostić, Dragan
AU  - Pržulj, Željko
AU  - Kapor, Darko
PY  - 1997
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2053
AB  - The dressing effect due to the quantum nature of phonons may cause the creation of bound states of several vibrons in the molecular chain. The possibility of creating soliton states of this type is discussed for the simple Frohlich one-dimensional model. The regions of the system parameter space where different mechanisms dominate the behaviour of such entities are characterized.
T2  - Journal of Physics: Condensed Matter
T1  - Effects of quantum lattice fluctuations on multiquanta Davydov-like solitons in a molecular chain
VL  - 9
IS  - 2
SP  - 413
EP  - 426
DO  - 10.1088/0953-8984/9/2/010
ER  - 

@article{
author = "Ivić, Zoran and Kostić, Dragan and Pržulj, Željko and Kapor, Darko",
year = "1997",
abstract = "The dressing effect due to the quantum nature of phonons may cause the creation of bound states of several vibrons in the molecular chain. The possibility of creating soliton states of this type is discussed for the simple Frohlich one-dimensional model. The regions of the system parameter space where different mechanisms dominate the behaviour of such entities are characterized.",
journal = "Journal of Physics: Condensed Matter",
title = "Effects of quantum lattice fluctuations on multiquanta Davydov-like solitons in a molecular chain",
volume = "9",
number = "2",
pages = "413-426",
doi = "10.1088/0953-8984/9/2/010"
}

Ivić, Z., Kostić, D., Pržulj, Ž.,& Kapor, D.. (1997). Effects of quantum lattice fluctuations on multiquanta Davydov-like solitons in a molecular chain. in Journal of Physics: Condensed Matter, 9(2), 413-426.
https://doi.org/10.1088/0953-8984/9/2/010

Ivić Z, Kostić D, Pržulj Ž, Kapor D. Effects of quantum lattice fluctuations on multiquanta Davydov-like solitons in a molecular chain. in Journal of Physics: Condensed Matter. 1997;9(2):413-426.
doi:10.1088/0953-8984/9/2/010 .

Ivić, Zoran, Kostić, Dragan, Pržulj, Željko, Kapor, Darko, "Effects of quantum lattice fluctuations on multiquanta Davydov-like solitons in a molecular chain" in Journal of Physics: Condensed Matter, 9, no. 2 (1997):413-426,
https://doi.org/10.1088/0953-8984/9/2/010 . .

TY  - JOUR
AU  - Ivić, Zoran
AU  - Pržulj, Željko
AU  - Kostić, Dragan
AU  - Kapor, Darko
AU  - Škrinjar, Mario J.
PY  - 1996
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2007
AB  - The existence of a two-vibron (amide-I quanta) bound state has been examined within the framework of a two-site realization of the Davydov model. The parameter space of the system is divided into two regions where the nature of pairing and the character of bound states are determined by the quite different physical mechanisms, The validity of the semiclassical approximation was discussed.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Effects of quantum lattice fluctuations on vibron pairing in two-site systems
VL  - 54
IS  - 5
SP  - 2992
EP  - 2995
DO  - 10.1103/PhysRevB.54.2992
ER  - 

@article{
author = "Ivić, Zoran and Pržulj, Željko and Kostić, Dragan and Kapor, Darko and Škrinjar, Mario J.",
year = "1996",
abstract = "The existence of a two-vibron (amide-I quanta) bound state has been examined within the framework of a two-site realization of the Davydov model. The parameter space of the system is divided into two regions where the nature of pairing and the character of bound states are determined by the quite different physical mechanisms, The validity of the semiclassical approximation was discussed.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Effects of quantum lattice fluctuations on vibron pairing in two-site systems",
volume = "54",
number = "5",
pages = "2992-2995",
doi = "10.1103/PhysRevB.54.2992"
}

Ivić, Z., Pržulj, Ž., Kostić, D., Kapor, D.,& Škrinjar, M. J.. (1996). Effects of quantum lattice fluctuations on vibron pairing in two-site systems. in Physical Review B: Condensed Matter and Materials Physics, 54(5), 2992-2995.
https://doi.org/10.1103/PhysRevB.54.2992

Ivić Z, Pržulj Ž, Kostić D, Kapor D, Škrinjar MJ. Effects of quantum lattice fluctuations on vibron pairing in two-site systems. in Physical Review B: Condensed Matter and Materials Physics. 1996;54(5):2992-2995.
doi:10.1103/PhysRevB.54.2992 .

Ivić, Zoran, Pržulj, Željko, Kostić, Dragan, Kapor, Darko, Škrinjar, Mario J., "Effects of quantum lattice fluctuations on vibron pairing in two-site systems" in Physical Review B: Condensed Matter and Materials Physics, 54, no. 5 (1996):2992-2995,
https://doi.org/10.1103/PhysRevB.54.2992 . .