Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session C06: Bose-Einstein Condensates, Photon Condensates, Atom Lasers, and Dynamics
10:30 AM–12:30 PM,
Tuesday, June 1, 2021
Chair: Martin Weitz, Bonn
Abstract: C06.00008 : Thermo-Optic Photon-Photon Interaction in Photon BECs at Dimensional Crossover from 2D to 1D*
11:54 AM–12:06 PM
Live
Presenter:
Enrico Stein
(Technical University of Kaiserslautern)
Authors:
Enrico Stein
(Technical University of Kaiserslautern)
Axel Pelster
(Department of Physics)
This talk studies theoretically the dimensional crossover from a two- to a one-dimensional photon BEC. Whereas, recently the thermodynamic properties were discussed in the non-interacting case [3], we focus here at the strength of the thermo-optic photon-photon interaction. To this end we use at first an extended Gross-Pitaevskii model and investigate how to deduce the effective photon-photon interaction strength from the condensate profile. Afterwards, we analyze how the many-body energy states drift due to the presence of the thermo-optic interaction in a thermalised photon BEC. In both cases we compare the results for an anisotropic harmonic confinement with those for a non-symmetric box potential.
[1] J. Klaers, J. Schmitt, F. Vewinger, and M. Weitz, Nature 468, 545 (2010)
[2] E. Stein, F. Vewinger, and A. Pelster, New J. Phys. 21, 103044 (2019)
[3] E. Stein, and A. Pelster, arXiv:2011.06339
*E. S. and A. P. acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the Collaborative Research Center SFB/TR185 (Project No. 277625399).
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