Condensate formation with three-component ultracold fermions
arXiv:1103.1064 · doi:10.1103/PhysRevA.83.033630
Abstract
We investigate the formation of Bose-Einstein condensation and population imbalance in a three-component Fermi superfluid by increasing the U(3) invariant attractive interaction. We consider the system at zero temperature in three dimensions and also in two dimensions. Within the mean-field theory, we derive explicit formulas for number densities, gap order parameter, condensate density and condensate fraction of the uniform system, and analyze them in the crossover from the Bardeen-Cooper-Schrieffer (BCS) state of Cooper pairs to the Bose-Einstein Condensate (BEC) of strongly-bound molecular dimers. In addition, we study this Fermi mixture trapped by a harmonic potential: we calculate the density profiles of the three components and the condensate density profile of Cooper pairs in the BCS-BEC crossover.
6 pages, 3 figures, accepted for publication in Physical Review A (regular article)
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Cited by in corpus (11)
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- New type of crossover physics in three-component Fermi gases
- Superfluidity, Sound Velocity and Quasi Condensation in the 2D BCS-BEC Crossover
- Tuning Rashba and Dresselhaus spin-orbit couplings: Effects on singlet and triplet condensation with Fermi atoms
- Three-body crossover from a Cooper triple to bound trimer state in three-component Fermi gases near a triatomic resonance
- Pair condensation in the BCS-BEC crossover of ultracold atoms loaded onto a 2D square lattice
- Pairing imbalance in BCS-BEC crossover of inhomogeneous three-component Fermi-gas in two dimensions
- From Narrow to Broad Feshbach Resonances: Condensate Fraction of Cooper Pairs and Preformed Molecules
- Fermionic condensation in ultracold atoms, nuclear matter and neutron stars
- Three-component Fermi gas with SU(3) symmetry: BCS-BEC crossover in three and two dimensions
- Mechanisms of anomalous three-body loss in a population-imbalanced three-component Fermi gas