Title
Continuation of spatially localized periodic solutions in discrete NLS lattices via normal forms
Abstract
We consider the problem of the continuation with respect to a small parameter epsilon of spatially localized and time periodic solutions in 1-dimensional dNLS lattices, where epsilon represents the strength of the interaction among the sites on the lattice. Specifically, we consider different dNLS models and apply a recently developed normal form algorithm in order to investigate the continuation and the linear stability of degenerate localized periodic orbits on lower and full dimensional invariant resonant tori. We recover results already existing in the literature and provide new insightful ones, both for discrete solitons and for invariant subtori. (C)& nbsp;2022 Elsevier B.V. All rights reserved.
Year
DOI
Venue
2022
10.1016/j.cnsns.2022.106266
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Keywords
DocType
Volume
Hamiltonian normal forms, Resonant tori, Perturbation theory, dNLS models, Discrete solitons
Journal
108
ISSN
Citations 
PageRank 
1007-5704
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Veronica Danesi100.34
M. Sansottera201.01
Simone Paleari342.36
Tiziano Penati411.30