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

Munehiro Nishida*, Susumu Kurihara

*この研究の対応する著者

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    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.

    本文言語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
    12
    出版ステータスPublished - 1999 12月

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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