Schlagheck, Peter and Wimberger, S. (2007) Nonexponential decay of Bose-Einstein condensates: a numerical study based on the complex scaling method. APPLIED PHYSICS B-LASERS AND OPTICS, 86 (3). pp. 385-390. ISSN 0946-2171,
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We study the decay dynamics of an interacting Bose-Einstein condensate in the presence of a metastable trapping potential from which the condensate can escape via tunneling through finite barriers. The time-dependent decay process is reproduced by means of the instantaneous decay rates of the condensate at a given population of the quasi-bound state, which are calculated with the method of complex scaling. Both for the case of a double-barrier potential as well as for the case of a tilted periodic potential, we find pronounced deviations from a monoexponential decay behavior, which would generally be expected in the absence of the atom-atom interaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL LATTICES; RESONANCES; SYSTEMS; DYNAMICS; STATES; MATTER; ATOMS; WELL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Dec 2020 11:00 |
| Last Modified: | 22 Dec 2020 11:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33192 |
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