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
Decay of superflow confined in thin torus : A realization of tunneling quantum fields. / Nishida, Munehiro; Kurihara, Susumu.
：: Journal of the Physical Society of Japan, 巻 68, 番号 12, 12.1999, p. 3778-3781.研究成果: Article
}
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 -