Nonequilibrium quantum dynamics of atomic dark solitons

被引：44

作者：

Martin, A. D. ^{[1
]}

Ruostekoski, J. ^{[1
]}

机构：

[1] Univ Southampton, Sch Math, Southampton SO17 1BJ, Hants, England

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

基金：

英国工程与自然科学研究理事会;

关键词：

BOSE-EINSTEIN CONDENSATE; OPTICAL LATTICE; NOISE; GASES;

D O I：

10.1088/1367-2630/12/5/055018

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the quantum dynamics of bosonic atoms that are excited to form a phase kink, or several kinks, by an imprinting potential in a one-dimensional trap. We calculate the dissipation due to quantum and thermal fluctuations in soliton trajectories, collisions and the core structure. Single-shot runs show weak filling of a soliton core, typically deeper solitons in the case of stronger fluctuations and spreading/disappearing solitons due to collisions. We also analyze a soliton system in an optical lattice that shows especially strong fluctuation-induced phenomena.

引用

页数：20

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