Collisional relaxation in diffuse clouds of trapped bosons
classification
❄️ cond-mat
keywords
relaxationtemperaturetrappedaboveanisotropiesbosebose-einsteinbosons
read the original abstract
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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