Proper treatment of the zero mode in quantum field theory for trapped Bose-Einstein condensation

M. Okumura, Y. Yamanaka

Research output: Contribution to journalArticle

17 Citations (Scopus)


A formulation of QFT for BEC system in a trap is presented. The formulation can be extended straightforwardly to thermal field theory to include thermal fluctuation as well. The scheme is more fundamental than the mean-field approximation and the Bogoliubov approach.

Original languageEnglish
Pages (from-to)013609/1-013609/12
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
Publication statusPublished - 2003 Jul 1


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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