Solitary Waves Under the Competition of Linear and Nonlinear Periodic Potentials
arXiv:0707.1162 · doi:10.1088/1751-8113/40/47/008
Abstract
In this paper, we study the competition of linear and nonlinear lattices and its effects on the stability and dynamics of bright solitary waves. We consider both lattices in a perturbative framework, whereby the technique of Hamiltonian perturbation theory can be used to obtain information about the existence of solutions, and the same approach, as well as eigenvalue count considerations, can be used to obtained detailed conditions about their linear stability. We find that the analytical results are in very good agreement with our numerical findings and can also be used to predict features of the dynamical evolution of such solutions.
arXiv comment13 pages, 4 figures
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