Schlagheck, Peter and Paul, Tobias (2006) Complex-scaling approach to the decay of Bose-Einstein condensates. PHYSICAL REVIEW A, 73 (2): 023619. ISSN 1050-2947,
Full text not available from this repository.Abstract
The mean-field dynamics of a Bose-Einstein condensate is studied in the presence of a microscopic trapping potential from which the condensate can escape via tunneling through finite barriers. We show that the method of complex scaling can be used to obtain a quantitative description of this decay process. A real-time propagation approach that is applied to the complex-scaled Gross-Pitaevskii equation allows us to calculate the chemical potentials and lifetimes of the metastably trapped Bose-Einstein condensate. The method is applied to a one-dimensional harmonic confinement potential combined with a Gaussian envelope, for which we compute the lowest symmetric and antisymmetric quasibound states of the condensate. A comparison with alternative approaches using absorbing boundary conditions as well as complex absorbing potentials shows good agreement.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RESONANCES; SYSTEMS; FIELD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Feb 2021 10:14 |
| Last Modified: | 24 Feb 2021 10:14 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35016 |
Actions (login required)
 |
View Item |
