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arXiv:1401.5610 · Physical Review A

Stability of the superfluid state in three-component fermionic optical lattice systems

Yuki Okanami, Nayuta Takemori, Akihisa Koga

Published May 21, 2014• 16 citations
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Abstract

Three-component fermionic optical lattice systems are investigated in dynamical mean-field theory for the Hubbard model. Solving the effective impurity model by means of continuous-time quantum Monte Carlo simulations in the Nambu formalism, we find that the $s$-wave superfluid state proposed recently is indeed stabilized in the repulsively interacting case and appears along a first-order phase boundary between metallic and paired Mott states in the paramagnetic system. The BCS-BEC (Bose-Einstein condensation) crossover in the three-component fermionic system is also addressed.

DOI
10.1103/physreva.89.053622

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