Collisional relaxation in diffuse clouds of trapped bosons

被引：27

作者：

Kavoulakis, GM

Pethick, CJ

Smith, H

机构：

[1] NORDITA, DK-2100 Copenhagen O, Denmark

[2] HC Orsted Inst, Orsted Lab, DK-2100 Copenhagen O, Denmark

来源：

PHYSICAL REVIEW A | 2000年 / 61卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.61.053603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The damping of collective modes and the relaxation of temperature anisotropies in a trapped Bose gas is determined at temperatures above the Bose-Einstein condensation temperature in the collisionless regime. We demonstrate for both cases how the effects of collisions may be treated perturbatively and calculate relaxation rates from a variational principle. Our results are compared with experiment and with previous theoretical calculations.

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页数：13

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