Wave turbulence in Bose-Einstein condensates

[摘要] The kinetics of nonequilibrium Bose-Einstein condensates (BEC) are considered within the framework of the Gross-Pitaevskii (GP) equation. A systematic derivation is given for weak small-scale perturbations of a steady confined condensate state. This approach combines a wavepacket WKB description with the weak turbulence theory. The WKB theory derived in this paper describes the effect of the condensate on the short-wave excitations which appears to be different from a simple renormalization of the confining potential suggested in previous literature. (C) 2003 Elsevier B.V. All rights reserved.

[发布日期] 2003-10-01

[效力级别]  Proceedings Paper

[关键词] turbulence;WKB theory;condensates