Decay of superflow confined in thin torus: A realization of tunneling quantum fields

Munehiro Nishida, Susumu Kurihara

    研究成果: Article

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    The quantum nucleation of phase slips in neutral superfluids confined in a thin torus is investigated by means of the collective coordinate method. We have devised, with numerical justification, a certain collective coordinate to describe the quantum nucleation process of a phase slip. Considering the quantum fluctuation around the local minimum of the action, we calculate the effective mass of the phase slip. Due to the coherence of the condensate throughout the torus, the effective mass is proportional to the circumference L of the torus, and the decay rate has a strong exponential L-dependence.

    元の言語English
    ページ(範囲)3778-3781
    ページ数4
    ジャーナルJournal of the Physical Society of Japan
    68
    発行部数12
    出版物ステータスPublished - 1999 12

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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