Damping of the quadrupole mode in a two-dimensional Fermi gas
In a recent experiment [E. Vogt et al., Phys. Rev. Lett. 108, 070404 (2012)], quadrupole and breathing modes of a two-dimensional Fermi gas were studied. We model these collective modes by solving the Boltzmann equation via the method of phase-space moments up to fourth order, including in-medium ef...
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| Main Authors: | , |
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| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
2013
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| In: |
Arxiv
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| Online Access: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1309.3651
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| Author Notes: | Silvia Chiacchiera, Centro de Fisica Computacional, Department of Physics, University of Coimbra, P-3004-516 Coimbra, Portugal; Dany Davesne, Universite de Lyon, F-69622 Lyon, France; Univ. Lyon 1, Villeurbanne; CNRS/IN2P3, UMR5822, IPNL; Tilman Enss, Institut für Theoretische Physik, Universität Heidelberg, D-69120 Heidelberg, Germany; Michael Urban, Institut de Physique Nucleaire, CNRS/IN2P3 and Universite Paris-Sud 11, F-91406 Orsay Cedex, France |
| Summary: | In a recent experiment [E. Vogt et al., Phys. Rev. Lett. 108, 070404 (2012)], quadrupole and breathing modes of a two-dimensional Fermi gas were studied. We model these collective modes by solving the Boltzmann equation via the method of phase-space moments up to fourth order, including in-medium effects on the scattering cross section. In our analysis, we use a realistic Gaussian potential deformed by the presence of gravity and magnetic field gradients. We conclude that the origin of the experimentally observed damping of the quadrupole mode, especially in the weakly interacting (or even non-interacting) case, cannot be explained by these mechanisms. |
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| Item Description: | Gesehen am 23.11.2017 |
| Physical Description: | Online Resource |