Derivation of non-Markovian transport equations for trapped cold atoms in nonequilibrium thermal field theory

Y. Nakamura, T. Sunaga, M. Mine, M. Okumura, Y. Yamanaka

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The non-Markovian transport equations for the systems of cold Bose atoms confined by a external potential both without and with a Bose-Einstein condensate are derived in the framework of nonequilibrium thermal field theory (Thermo Field Dynamics). Our key elements are an explicit particle representation and a self-consistent renormalization condition which are essential in thermal field theory. The non-Markovian transport equation for the non-condensed system, derived at the two-loop level, is reduced in the Markovian limit to the ordinary quantum Boltzmann equation derived in the other methods. For the condensed system, we derive a new transport equation with an additional collision term which becomes important in the Landau instability.

本文言語English
ページ(範囲)426-441
ページ数16
ジャーナルAnnals of Physics
325
2
DOI
出版ステータスPublished - 2010 2 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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