TY  - JOUR
AU  - Gligorić, Goran
AU  - Maluckov, Aleksandra
AU  - Stepić, Milutin
AU  - Hadžievski, Ljupčo
AU  - Malomed, Boris A.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3913
AB  - We analyse the existence, stability and dynamics of localized discrete modes with intrinsic vorticity S = 1 and S = 2 in the disc-shaped dipolar Bose-Einstein condensate loaded into a deep two-dimensional optical lattice. The condensate, which features the interplay of local contact and nonlocal dipole-dipole (DD) interactions between atoms, is modelled by the 2D discrete Gross-Pitaevskii equation which includes the long-range DD term. Various species of discrete vortex solitons, which are known in the model of the condensate with local interactions, are found to exist in the presence of the DD interaction too. In locally self-attractive condensates, the isotropic DD repulsion, which corresponds to the orientation of atomic dipoles perpendicular to the confinement plane, helps to extend the region of the vortex stability, while in the case of anisotropic DD interactions, corresponding to the in-plane orientation of the dipoles, vortices are unstable. In the former case, those vortices which are unstable may evolve into robust ring-shaped breathers. The attractive isotropic DD interaction can create localized vortices in the condensate with the local self-repulsion, but they all are unstable, evolving into single-peak asymmetric structures.
T2  - Journal of Physics. B: Atomic Molecular and Optical Physics
T1  - Discrete vortex solitons in dipolar Bose-Einstein condensates
VL  - 43
IS  - 5
DO  - 10.1088/0953-4075/43/5/055303
ER  - 

@article{
author = "Gligorić, Goran and Maluckov, Aleksandra and Stepić, Milutin and Hadžievski, Ljupčo and Malomed, Boris A.",
year = "2010",
abstract = "We analyse the existence, stability and dynamics of localized discrete modes with intrinsic vorticity S = 1 and S = 2 in the disc-shaped dipolar Bose-Einstein condensate loaded into a deep two-dimensional optical lattice. The condensate, which features the interplay of local contact and nonlocal dipole-dipole (DD) interactions between atoms, is modelled by the 2D discrete Gross-Pitaevskii equation which includes the long-range DD term. Various species of discrete vortex solitons, which are known in the model of the condensate with local interactions, are found to exist in the presence of the DD interaction too. In locally self-attractive condensates, the isotropic DD repulsion, which corresponds to the orientation of atomic dipoles perpendicular to the confinement plane, helps to extend the region of the vortex stability, while in the case of anisotropic DD interactions, corresponding to the in-plane orientation of the dipoles, vortices are unstable. In the former case, those vortices which are unstable may evolve into robust ring-shaped breathers. The attractive isotropic DD interaction can create localized vortices in the condensate with the local self-repulsion, but they all are unstable, evolving into single-peak asymmetric structures.",
journal = "Journal of Physics. B: Atomic Molecular and Optical Physics",
title = "Discrete vortex solitons in dipolar Bose-Einstein condensates",
volume = "43",
number = "5",
doi = "10.1088/0953-4075/43/5/055303"
}

Gligorić, G., Maluckov, A., Stepić, M., Hadžievski, L.,& Malomed, B. A.. (2010). Discrete vortex solitons in dipolar Bose-Einstein condensates. in Journal of Physics. B: Atomic Molecular and Optical Physics, 43(5).
https://doi.org/10.1088/0953-4075/43/5/055303

Gligorić G, Maluckov A, Stepić M, Hadžievski L, Malomed BA. Discrete vortex solitons in dipolar Bose-Einstein condensates. in Journal of Physics. B: Atomic Molecular and Optical Physics. 2010;43(5).
doi:10.1088/0953-4075/43/5/055303 .

Gligorić, Goran, Maluckov, Aleksandra, Stepić, Milutin, Hadžievski, Ljupčo, Malomed, Boris A., "Discrete vortex solitons in dipolar Bose-Einstein condensates" in Journal of Physics. B: Atomic Molecular and Optical Physics, 43, no. 5 (2010),
https://doi.org/10.1088/0953-4075/43/5/055303 . .