Discrete solitons in optical BEC lattices. Effects of n-body interactions

Autor:	Cuevas-Maraver, Jesús, Kevrekidis, Panayotis G., Karachalios, Nikolaos I., Melvin, Thomas R.O., Champneys, A. R., Eilbeck, J. Chris
Přispěvatelé:	Universidad de Sevilla. Departamento de Física Aplicada I, Universidad de Sevilla. FQM280: Fisica no Lineal
Rok vydání:	2006
Předmět:	Nonlinear Sciences::Exactly Solvable and Integrable Systems Nonlinear Sciences::Pattern Formation and Solitons
Zdroj:	idUS. Depósito de Investigación de la Universidad de Sevilla instname
Popis:	In this poster we show some recent results concerning discrete solitons in strong optical lattices, which can be described by the Discrete Nonlinear Schrödinger equation. These results are related to a variation of this equation including saturable nonlinearity terms, a feature throughoutly studied in nonlinear optics. After presenting the derivation of the DNLS equation from the Gross-Pitaevskii equation in the presence of a strong optical lattice, we study the existence of thresholds in the quadratic norm of discrete solitons in the cubic DNLS, cubic-quintic DNLS and photorefractive-DNLS. The second part of the poster is devoted to moving discrete solitons in the photorefractive DNLS equation. In the one hand, we study the existence of radiationless moving discrete solitons; on the other hand, we study the collisions of moving discrete solitons.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::16e919b82c4bc71cf88495fa7151ca08 https://idus.us.es/handle/11441/43094 Zobrazit plný text záznamu