Modulational instability criteria for two-component Bose-Einstein condensates

被引：33

作者：

Kourakis, I ^{[1
]}

Shukla, PK

Marklund, M

Stenflo, L

机构：

[1] Ruhr Univ Bochum, Fak Phys & Astron, Inst Theoret Phys 4, D-44780 Bochum, Germany

[2] Umea Univ, Dept Phys, S-90187 Umea, Sweden

来源：

EUROPEAN PHYSICAL JOURNAL B | 2005年 / 46卷 / 03期

关键词：

Neural Network; Nonlinear Dynamics; Relevant Parameter; Wave State; Coupling Coefficient;

D O I：

10.1140/epjb/e2005-00271-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The stability of colliding Bose-Einstein condensates is investigated. A set of coupled Gross-Pitaevskii equations is thus considered, and analyzed via a perturbative approach. No assumption is made on the signs ( or magnitudes) of the relevant parameters like the scattering lengths and the coupling coefficients. The formalism is therefore valid for asymmetric as well as symmetric coupled condensate wave states. A new set of explicit criteria is derived and analyzed. An extended instability region, in addition to an enhanced instability growth rate, is predicted for unstable two component bosons, as compared to the individual ( uncoupled) state.

引用

页码：381 / 384

页数：4

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