Bogoliubov spectrum of a cigar shaped Fermi superfluid in an optical lattice at the BEC-BCS crossover
arXiv:0705.3298 · doi:10.1088/0953-4075/40/23/005
Abstract
We study the Bogoliubov spectrum of an elongated Fermi superfluid confined in an one-dimensional superfluid along the Bose-Einstein-condensate (BEC)-Bardeen-Cooper-Schrieffer (BCS) crossover. We derive analytic expressions for the sound velocity, effective mass and the Bogoliubov excitation spectrum of the axial quasiparticles long the crossover based on the hydrodynamic theory. Our investigation reveal interesting signatures of BEC-BCS crossover in an optical lattice which deserve experimental investigation.
arXiv commentTo appear in Journal of Physics B 2007
References in corpus (32)
- Observation of resonance condensation of fermionic atom pairs
- Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
- Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
- Experimental Study of the BEC-BCS Crossover Region in Lithium 6
- Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
- Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
- Collective excitations of a degenerate gas at the BEC-BCS crossover
- Interatomic collisions in a tightly confined Bose gas
- High-temperature superfluidity of fermionic atoms in optical lattices
- Pure Gas of Optically Trapped Molecules Created from Fermionic Atoms
- BEC-BCS crossover in "magnetized" Feshbach-resonantly paired superfluids
- Collective mode of homogeneous superfluid Fermi gases in the BEC-BCS crossover
- Bulk and Collective Properties of a Dilute Fermi Gas in the BCS-BEC Crossover
- Production of a Fermi gas of atoms in an optical lattice
- Collective modes of trapped gases at the BEC-BCS crossover
- Elastic and inelastic collisions of 6Li in magnetic and optical traps
- Collective modes and ballistic expansion of a Fermi gas in the BCS-BEC crossover
- Formation of Pairing Fields in Resonantly Coupled Atomic and Molecular Bose-Einstein Condensates
- Collective oscillations of a trapped Fermi gas near a Feshbach resonance
- Effective action for Superconductors and BCS-Bose crossover
- Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates
- Sound velocity and multibranch Bogoliubov spectrum of an elongated Fermi superfluid in the BEC-BCS crossover
- BCS-BEC crossover with a finite-range interaction
- Sound modes at the BCS-BEC crossover
- Sound propagation and oscillations of a superfluid Fermi gas in the presence of a 1D optical lattice
- Collective Excitations of Strongly Interacting Fermi Gases of Atoms in a Harmonic Trap
- Path integral formulation of the tunneling dynamics of a superfluid Fermi gas in an optical potential
- Excitations of a Bose-Einstein condensate in a one-dimensional optical lattice
- Collective oscillations of a Fermi gas near a Feshbach resonance
- Umklapp collisions and center of mass oscillation of a trapped Fermi gas
- A simple mean field equation for condensates in the BEC-BCS crossover regime
- Pairing gaps in atomic gases at the BCS-BEC crossover