Nonequilibrium Bose systems and nonground-state Bose-Einstein condensates

Details Nonequilibrium Bose systems and nonground-state Bose-Einstein condensates Nonequilibrium Bose systems and nonground-state Bose-Einstein condensates

2006-06-26

arxiv.org/abs/cond-mat/0606654v1

Laser Phys. Lett. 3 (2006) 406-414

Physics

Condensed Matter

Statistical Mechanics

Latex file, 16 pages, no figures

Scientific paper

The theory of resonant generation of nonground-state Bose-Einstein condensates is extended to Bose-condensed systems at finite temperature. The generalization is based on the notion of representative statistical ensembles for Bose systems with broken global gauge symmetry. Self-consistent equations are derived describing an arbitrary nonequilibrium nonuniform Bose system. The notion of finite-temperature topological coherent modes, coexisting with a cloud of noncondensed atoms, is introduced. It is shown that resonant generation of these modes is feasible for a gas of trapped Bose atoms at finite temperature.

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