On Moving Discrete Modes in Nonlinear Lattices
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In this paper we summarize the results of our investigation of the moving localized structures in lattice like systems. Dynamics of discrete localized modes in cubic, cubic-quintic, saturable photorefractive lattice and in the Bose-Einstein condensate modelled by the nonpolynomial Schrodinger equation are considered in the framework of the Peierls-Nabarro barrier. Two approaches are numerically tested: free-energy approach and mapping analysis. We show that only the last one is appropriate.
Keywords:the Peierls-Nabarro barrier / free energy / mapping analysis
Source:AIP Conference Proceedings, 2008, 1076, 142-+
- Ministry of Science of Serbia [I4I034]
- 7th International Summer School and Conference on Lets Face Chaos through Nonlinear Dynamics, Jun 29-Jul 13, 2008, Univ Maribor, Maribor, Slovenia