Collisional relaxation in diffuse clouds of trapped bosons

Details Collisional relaxation in diffuse clouds of trapped bosons Collisional relaxation in diffuse clouds of trapped bosons

1999-10-06

arxiv.org/abs/cond-mat/9910081v1

Phys. Rev. A, 61 (2000) 053603

Physics

Condensed Matter

13 pages, revtex, 4 postscript figures

Scientific paper

10.1103/PhysRevA.61.053603

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 based on a variational principle. Our results are compared with experiment and with previous theoretical calculations.

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