Levinson-like theorem for scattering from a Bose-Einstein condensate -: art. no. 070403

被引：6

作者：

Brand, J ^{[1
]}

Häring, I ^{[1
]}

Rost, JM ^{[1
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.91.070403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A relation between the number of bound elementary excitations of an atomic Bose-Einstein condensate and the phase shift of elastically scattered atoms is derived. Within the Bogoliubov model of a weakly interacting Bose gas this relation is exact and generalizes Levinson's theorem. Specific features of the Bogoliubov model such as complex energy and continuum bound states are discussed and a numerical example is given.

引用

页数：4

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