Anderson localization of elementary excitations in a one-dimensional Bose-Einstein condensate

被引：50

作者：

Bilas, N. ^{[1
]}

Pavloff, N. ^{[1
]}

机构：

[1] Univ Paris Sud, Lab Phys Theor & Modeles Stat, F-91405 Orsay, France

来源：

EUROPEAN PHYSICAL JOURNAL D | 2006年 / 40卷 / 03期

关键词：

D O I：

10.1140/epjd/e2006-00166-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the elementary excitations of a transversely confined Bose-Einstein condensate in presence of a weak axial random potential. We determine the localization length (i) in the hydrodynamical low energy regime; for a domain of linear densities ranging from the Tonks-Girardeau to the transverse Thomas-Fermi regime; in the case of a white noise potential and (ii) for all the range of energies, in the "one-dimensional mean field regime", in the case where the randomness is induced by a series of randomly placed point-like impurities. We discuss our results in view of recent experiments in elongated BEG systems.

引用

页码：387 / 397

页数：11

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