One-dimensional delocalizing transitions of matter waves in optical lattices

被引：12

作者：

Cruz, H. A. ^{[1
,2
]}

Brazhnyi, V. A. ^{[1
]}

Konotop, V. V. ^{[1
,2
]}

Salerno, M. ^{[3
,4
]}

机构：

[1] Univ Lisbon, Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal

[2] Univ Lisbon, Dept Fis, Fac Ciencias, P-1749016 Lisbon, Portugal

[3] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, SA, Italy

[4] Univ Salerno, Consorzio Nazl Interuniv Sci Fis Mat CNISM, I-84081 Baronissi, SA, Italy

来源：

PHYSICA D-NONLINEAR PHENOMENA | 2009年 / 238卷 / 15期

关键词：

Nonlinear dynamics; Gap-solitons; Localized modes; Bose-Einstein condensates; Bose-Bose mixtures; NONLINEAR SCHRODINGER-EQUATION; INTRINSIC LOCALIZED MODES; DYNAMICS;

D O I：

10.1016/j.physd.2008.09.008

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We investigate, both analytically and numerically, the conditions for the occurrence of the delocalizing transition phenomenon of one-dimensional localized modes of several nonlinear continuous periodic and discrete systems of the nonlinear Schrodinger type. We show that either non-existence of solitons in the small amplitude limit or the loss of stability along existence branches can lead to delocalizing transitions, which occur following different scenarios. Examples of delocalizing transitions of both types are provided for a class of equations which describe single component and binary mixtures of Bose-Einstein condensates trapped in linear and nonlinear optical lattices. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1372 / 1387

页数：16

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