Superfluid to insulator phase transition in a unitary Fermi gas

Details Superfluid to insulator phase transition in a unitary Fermi gas Superfluid to insulator phase transition in a unitary Fermi gas

2008-03-15

arxiv.org/abs/0803.2293v1

Physics

Condensed Matter

Statistical Mechanics

4 pages,4 figures

Scientific paper

10.1103/PhysRevA.78.053629

We study the evolution of the energy gap in a unitary Fermi gas as a function of temperature. To this end we approximate the Fermi gas by the Hubbard lattice Hamiltonian and solve using the dynamical mean-field approximation. We have found that below the critical temperature, Tc, the system is a superfluid and the energy gap is decreasing monotonously. For temperatures above Tc the system is an insulator and the corresponding energy gap is monotonously increasing.

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