Population imbalance and pairing in the BCS-BEC crossover of three-component ultracold fermions

Abstract

We investigate the phase diagram and the BCS-BEC crossover of a homogeneous three-component ultracold Fermi gas with a U(3) invariant attractive interaction. We show that the system at sufficiently low temperatures exhibits population imbalance, as well as fermionic pairing. We describe the crossover in this system, connecting the weakly interacting BCS regime of the partially population-imbalanced fermion pairing state and the BEC limit with three weakly interacting species of molecules, including pairing fluctuations within a t-matrix calculation of the particle self-energies.

arXiv comment12 pages, 7 figures, published version

References in corpus (37)

• QCD Phenomenology based on a Chiral Effective Lagrangian
• Universality in Few-body Systems with Large Scattering Length
• Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
• Evidence for Efimov quantum states in an ultracold gas of cesium atoms
• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Weakly bound dimers of fermionic atoms
• Collisional stability of a three-component degenerate Fermi gas
• Ultracold fermions and the SU(N) Hubbard model
• Realization of SU(2)*SU(6) Fermi System
• Three-body recombination in a three-state Fermi gas with widely tunable interactions
• Ultracold Gases of Ytterbium: Ferromagnetism and Mott States in an SU(6) Fermi System
• Color Superfluidity and "Baryon" Formation in Ultracold Fermions
• New Critical Point Induced by the Axial Anomaly in Dense QCD
• Efimov Physics in Cold Atoms
• Universal thermodynamics of strongly interacting Fermi gases
• BCS-BEC crossover at finite temperature in the broken-symmetry phase
• Superfluidity and magnetism in multicomponent ultracold fermions
• Phase structure, collective modes, and the axial anomaly in dense QCD
• BCS pairing in Fermi systems with several flavors
• The NJL model of dense three-flavor matter with axial anomaly: the low temperature critical point and BEC-BCS diquark crossover
• Trionic phase of ultracold fermions in an optical lattice: A variational study
• Pairing in a three component Fermi gas
• Simulating dense QCD matter with ultracold atomic boson-fermion mixtures
• Three-body Recombination of Lithium-6 Atoms with Large Negative Scattering Lengths
• Superfluidity in a Three-flavor Fermi Gas with SU(3) Symmetry
• Efimov effect from functional renormalization
• Functional renormalization for trion formation in ultracold fermion gases
• Comparison of Different Pairing Fluctuation Approaches to BCS-BEC Crossover
• Superfluidity in Three-species Mixture of Fermi Gases across Feshbach Resonances
• Co-existence and shell structures of several superfluids in trapped three-component Fermi mixtures
• A possible Efimov trimer state in a 3-component lithium-6 mixture
• Three-body loss in lithium from functional renormalization
• Superfluid phases of the three-species fermion gas
• The axial anomaly and the phases of dense QCD
• Phase diagram, extended domain walls, and soft collective modes in a three component fermionic superfluid
• Induced interactions and the superfluid transition temperature in a three-component Fermi gas
• Three-fermion problems in optical lattices

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• Superfluid transition temperature and fluctuation theory of spin-orbit and Rabi-coupled fermions with tunable interactions
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• Global superfluid phase diagram of three component fermions with magnetic ordering
• Multi-body correlations in SU(3) Fermi gases
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• Scattering resonances and pairing in a Rabi-coupled Fermi gas
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• Superfluidity in multicomponent fermions via the functional renormalization group
• Unconventional color superfluidity in ultra-cold fermions: Quintuplet pairing, quintuple point and pentacriticality
• Three-component Fermi gas with SU(3) symmetry: BCS-BEC crossover in three and two dimensions
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