RELAXATION PROCESSES IN CLOUDS OF TRAPPED BOSONS ABOVE THE BOSE-EINSTEIN CONDENSATION TEMPERATURE

Authors
KAVOULAKIS GM PETHICK CJ SMITH H
Citation
Gm. Kavoulakis et al., RELAXATION PROCESSES IN CLOUDS OF TRAPPED BOSONS ABOVE THE BOSE-EINSTEIN CONDENSATION TEMPERATURE, Physical review letters, 81(19), 1998, pp. 4036-4039
Citations number
19
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
19
Year of publication
1998
Pages
4036 - 4039
Database
ISI
SICI code
0031-9007(1998)81:19<4036:RPICOT>2.0.ZU;2-M
Abstract
We present a unified account of damping of low-lying collective modes and of relaxation of temperature anisotropies in a trapped Bose gas in the collisionless regime. By means of variational techniques, we show that the relaxation times for the two situations are closely related to the simplest variational estimate of the viscous relaxation time. W e derive rather precise theoretical expressions for the characteristic relaxation times and compare our results with experiment. [S0031-9007 (98)07598-X].