Phase diagram of imbalanced strongly interacting fermions on a one-dimensional optical lattice

Abstract

We show that the Hubbard Hamiltonian with particle-assisted tunneling rates --recently proposed to model a fermionic mixture near a broad Feshbach resonance-- displays a ground state phase diagram with superfluid, insulating, and phase separated regimes. In the latter case, when the populations are balanced the two phases coexist in microscopic antiferromagnetic domains. Macroscopic phase segregation into a high-density superfluid of molecules, and a low-density Fermi liquid of single atoms appears in the density profile above a critical polarization p_c.

arXiv comment4 pages, 3 figures

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Cited by in corpus (4)

• Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
• Hidden XY structure of the bond-charge Hubbard model
• Detecting the tunneling rates for strongly interacting fermions on optical lattices
• FFLO oscillations and magnetic domains in the Hubbard model with off-diagonal Coulomb repulsion