Hydrodynamic Modes in a Trapped Strongly Interacting Fermi Gases of Atoms

Abstract

The zero-temperature properties of a dilute two-component Fermi gas in the BCS-BEC crossover are investigated. On the basis of a generalization of the variational Schwinger method, we construct approximate semi-analytical formulae for collective frequencies of the radial and the axial breathing modes of the Fermi gas under harmonic confinement in the framework of the hydrodynamic theory. It is shown that the method gives nearly exact solutions.

11 pages

References in corpus (9)

• Observation of Bose-Einstein Condensation of Molecules
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Weakly bound dimers of fermionic atoms
• Collective excitations of a degenerate gas at the BEC-BCS crossover
• Heat Capacity of a Strongly-Interacting Fermi Gas
• Pure Gas of Optically Trapped Molecules Created from Fermionic Atoms
• Collective modes and ballistic expansion of a Fermi gas in the BCS-BEC crossover
• Spectroscopic insensitivity to cold collisions in a two-state mixture of fermions

Cited by in corpus (11)

• Quantized Superfluid Vortex Rings in the Unitary Fermi Gas
• Extended Thomas-Fermi Density Functional for the Unitary Fermi Gas
• DC Josephson Effect with Fermi gases in the Bose-Einstein regime
• Effective Nonlinear Schrödinger Equations for Cigar-Shaped and Disk-Shaped Fermi Superfluids at Unitarity
• Expansion of a Fermi Cloud in the BCS-BEC Crossover
• Validating Simple Dynamical Simulations of the Unitary Fermi Gas
• Low-temperature thermodynamics of the unitary Fermi gas: superfluid fraction, first sound and second sound
• Fermi-Bose mixture across a Feshbach resonance
• Viscosity-entropy ratio of the unitary Fermi gas from zero-temperature elementary excitations
• Gradient corrections to the local density approximation for trapped superfluid Fermi gases
• On the kinetic energy of unitary Fermi gas in a harmonic trap