Excitations at the border of a condensate
- We solve the Bogoliubov equations for an inhomogeneous condensate in the vicinity of a linear turning point. A stable integration scheme is developed using a transformation into an adiabatic basis. We identify boundary modes trapped in a potential whose shape is similar to a Hartree-Fock mean-field treatment. These modes are non-resonantly excited when bulk modes reflect at the turning point and contribute significantly to the spectrum of local density fluctuations.
| Author details: | Abdoulaye Diallo, Carsten HenkelORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1088/0953-4075/48/16/165302 |
| ISSN: | 0953-4075 |
| ISSN: | 1361-6455 |
| 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: | 2015 |
| Publication year: | 2015 |
| Release date: | 2017/03/27 |
| Tag: | Bose-Einstein condensate; Feshbach resonance; dynamic structure factor; elementary excitation; quantum gas |
| Volume: | 48 |
| Issue: | 16 |
| Number of pages: | 14 |
| Funding institution: | Universitat Potsdam |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
