Sound propagation and oscillations of a superfluid Fermi gas in the presence of a 1D optical lattice
arXiv:cond-mat/0407532 · doi:10.1103/PhysRevA.71.053602
Abstract
We develop the hydrodynamic theory of Fermi superfluids in the presence of a periodic potential. The relevant parameters governing the propagation of sound (compressibility and effective mass) are calculated in the weakly interacting BCS limit. The conditions of stability of the superfluid motion with respect to creation of elementary excitations are discussed. We also evaluate the frequency of the center of mass oscillation when the superfluid gas is additionally confined by a harmonic trap.
arXiv commentVersion accepted in Phys. Rev. A. It contains a discussion on the dynamical instability of Fermi superfluids in optical lattices
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- Effects of periodic potentials on the critical velocity of superfluid Fermi gases in the BCS-BEC crossover
- Superfluid fraction in the crystalline crust of a neutron star: role of BCS pairing
- Flow-Induced Charge Modulation in Superfluid Atomic Fermions Loaded into an Optical Kagome Lattice
- Ground State Properties of an Asymmetric Hubbard Model for Unbalanced Ultracold Fermionic Quantum Gases
- Superfluid Fraction and Leggett Bound in a Density Modulated Strongly Interacting Fermi Gas at Zero Temperature
- Aspects of Superfluid Cold Atomic Gases in Optical Lattices
- Fermionic superfluid properties in a one-dimensional optical lattice
- Stability of superfluid Fermi gases in optical lattices
- Bogoliubov spectrum of a cigar shaped Fermi superfluid in an optical lattice at the BEC-BCS crossover