Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 3778-3781 |
| Number of pages | 4 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 68 |
| Issue number | 12 |
| Publication status | Published - 1999 Dec |
Keywords
- Bose Einstein condensation
- Phase slip
- Quantum nucleation
ASJC Scopus subject areas
- Physics and Astronomy(all)