Collective oscillations of a Fermi gas near a Feshbach resonance

Theja N. De Silva; Erich J. Mueller

doi:10.1103/PhysRevA.72.063614

Collective oscillations of a Fermi gas near a Feshbach resonance

Theja N. De Silva, Erich J. Mueller

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the Bardeen, Cooper, and Schrieffer-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show nonmonotonic 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 Li6 systems and with other theoretical approaches.

Original language	English (US)
Article number	063614
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	72
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.72.063614
State	Published - Dec 2005
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the Bardeen, Cooper, and Schrieffer-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show nonmonotonic 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 Li6 systems and with other theoretical approaches.",

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Collective oscillations of a Fermi gas near a Feshbach resonance

Abstract

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