Chretien, Renaud and Rammensee, Josef and Dujardin, Julien and Petitjean, Cyril and Schlagheck, Peter (2019) Al'tshuler-Aronov-Spivak oscillations of bosonic matter-wave beams in the presence of interaction. PHYSICAL REVIEW A, 100 (3): 033606. ISSN 2469-9926, 2469-9934
Full text not available from this repository. (Request a copy)Abstract
We study theoretically the propagation of a guided atom laser across an Aharonov-Bohm ring which is exposed to a synthetic gauge field. The presence of disorder within the ring gives rise to Al'tshuler-AronovSpivak oscillations, seen in the disorder average of the transmission as a function of the effective gauge flux that is contained within the ring. Those oscillations are induced by coherent backscattering and represent a manifestation of weak localization. Through analytical and numerical calculations that are based on the mean-field Gross-Pitaevskii approximation for the propagating Bose-Einstein condensate, we show that the presence of a very weak atom-atom interaction within the ring leads to an inversion of the Al'tshuler-Aronov-Spivak oscillations, in a very similar manner as for the coherent backscattering of Bose-Einstein condensates within two-dimensional disorder potentials. Numerical simulations based on the truncated Wigner method reveal that this signature of weak antilocalization becomes washed out if the interaction strength is increased.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COHERENT BACKSCATTERING; WEAK-LOCALIZATION; ELECTROMAGNETIC POTENTIALS; ATOM LASER; SCATTERING; MAGNETORESISTANCE; INTERFERENCE; PERIODICITY; ELECTRONS; MEDIA; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Mar 2020 08:12 |
| Last Modified: | 30 Mar 2020 08:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26275 |
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