Soliton-sound interactions in quasi-one-dimensional Bose-Einstein condensates

被引：69

作者：

Parker, NG ^{[1
]}

Proukakis, NP ^{[1
]}

Leadbeater, M ^{[1
]}

Adams, CS ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.90.220401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Longitudinal confinement of dark solitons in quasi-one-dimensional Bose-Einstein condensates leads to sound emission and reabsorption. We perform quantitative studies of the dynamics of a soliton oscillating in a tight dimple trap, embedded in a weaker harmonic trap. The dimple depth provides a sensitive handle to control the soliton-sound interaction. In the limit of no reabsorption, the power radiated is found to be proportional to the soliton acceleration squared. An experiment is proposed to detect sound emission as a change in amplitude and frequency of soliton oscillations.

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页数：4

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