Nambu-Goldstone mode in trapped Bose-Einstein condensation

M. Okumura, Yoshiya Yamanaka

    Research output: Contribution to journalArticle


    The Bose-Einstein condensation (BEC) of neutral atoms in quantum field theory (QFT) and thermal field theory (TFT) is formulated. An infinitesimal breaking term to control the behaviors of the system in the infrared region is introduced. The Nambu-Goldstone (NG) mode possesses an artificial non-zero energy. The results indicate that the existence of the NG mode effects observable quantities, such as, condensate profile.

    Original languageEnglish
    Pages (from-to)1101
    Number of pages1
    JournalJournal of Modern Optics
    Issue number6-7
    Publication statusPublished - 2004 Apr 15


    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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