Collective oscillations of a Fermi gas near a Feshbach resonance

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A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the BCS-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show non-monotonic behavior as a function of the interaction strength, while quadrupole modes are insensitive to interactions for both spherically symmetric and axially symmetric traps. Quantitative agreement is found with experiments on atomic $^6Li$ system and with other theoretical approaches.
7 pages, 4 figures

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Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/101719

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0508402
 http://arxiv.org/abs/cond-mat/0508402
 Phys. Rev. A 72, 063614 (2005)
 doi:10.1103/PhysRevA.72.063614

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arXiv