### 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.

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 |

巻 | 68 |

発行部数 | 12 |

出版物ステータス | Published - 1999 12 |

### Fingerprint

### ASJC Scopus subject areas

- Physics and Astronomy(all)

### これを引用

*Journal of the Physical Society of Japan*,

*68*(12), 3778-3781.

**Decay of superflow confined in thin torus : A realization of tunneling quantum fields.** / Nishida, Munehiro; Kurihara, Susumu.

研究成果: Article

*Journal of the Physical Society of Japan*, 巻. 68, 番号 12, pp. 3778-3781.

}

TY - JOUR

T1 - Decay of superflow confined in thin torus

T2 - A realization of tunneling quantum fields

AU - Nishida, Munehiro

AU - Kurihara, Susumu

PY - 1999/12

Y1 - 1999/12

N2 - 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.

AB - 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.

KW - Bose Einstein condensation

KW - Phase slip

KW - Quantum nucleation

UR - http://www.scopus.com/inward/record.url?scp=0033263897&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033263897&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033263897

VL - 68

SP - 3778

EP - 3781

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 12

ER -