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A perturbative approach to inelastic collisions in a Bose-Einstein condensate
- It has recently been discovered that for certain rates of mode-exchange collisions analytic solutions can be found for a Hamiltonian describing the two-mode Bose-Einstein condensate. We proceed to study the behaviour of the system using perturbation theory if the coupling constants only approximately match these parameter constraints. We find that the model is robust to such perturbations. We study the effects of degeneracy on the perturbations and find that the induced changes differ greatly from the non-degenerate case. We also model inelastic collisions that result in particle loss or condensate decay as external perturbations and use this formalism to examine the effects of three-body recombination and background collisions.
| Author details: | R. B. Mann, M. B. Young, I. Fuüntes-Schuller |
|---|---|
| DOI: | https://doi.org/10.1088/0953-4075/44/8/085301 |
| ISSN: | 0953-4075 |
| Title of parent work (English): | Journal of physics : B, Atomic, molecular and optical physics |
| Publisher: | IOP Publ. Ltd. |
| Place of publishing: | Bristol |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2011 |
| Publication year: | 2011 |
| Release date: | 2017/03/26 |
| Volume: | 44 |
| Issue: | 8 |
| Number of pages: | 17 |
| Funding institution: | Natural Sciences & Engineering Research Council of Canada; Renaissance Technologies fellowship; Alexander von Humboldt Foundation |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
