Collective excitations of Bose-Einstein condensates in a double-well potential

Ippei Danshita, Kyota Egawa, Nobuhiko Yokoshi, Susumu Kurihara

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    6 Citations (Scopus)

    Abstract

    We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.

    Original languageEnglish
    Pages (from-to)3179-3185
    Number of pages7
    JournalJournal of the Physical Society of Japan
    Volume74
    Issue number12
    DOIs
    Publication statusPublished - 2005 Dec

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    Keywords

    • Anomalous tunneling
    • Bogoliubov excitation
    • Bose-Einstein condensate
    • Double-well trap
    • Josephson effect

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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