Destruction of interference by many-body interactions in cold atomic Bose gases

被引：29

作者：

Chen, S ^{[1
]}

Egger, R ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Theoret Phys, D-40225 Dusseldorf, Germany

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.68.063605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effects of many-body interactions on the interference in a Mach-Zehnder interferometer for matter waves of ultracold Bose atoms. After switching off an axial trapping potential, the thermal initial wave packet expands, and subsequently interference fringes may be observed in a circular one-dimensional trap. These are computed for axial harmonic or delta-function traps, and for interaction strengths from the Thomas-Fermi regime to the Tonks-Girardeau limit. It is shown that many-body correlations in a realistic setup destroy interference to a large degree. Analytical expressions allowing to infer the observability of phase coherence and interference are provided.

引用

页数：7