Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity

Details Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity

2006-02-09

arxiv.org/abs/cond-mat/0602224v2

Phys. Rev. Lett. 96, 160402 (2006)

Physics

Condensed Matter

Statistical Mechanics

4+1 pages, 4 figures, published version + erratum

Scientific paper

10.1103/PhysRevLett.96.160402

The unitarity regime of the BCS-BEC crossover can be realized by diluting a system of two-component lattice fermions with an on-site attractive interaction. We perform a systematic-error-free finite-temperature simulations of this system by diagrammatic determinant Monte Carlo. The critical temperature in units of Fermi energy is found to be T_c / E_F = 0.152(7). We also report the behavior of the thermodynamic functions, and discuss the issues of thermometry of ultracold Fermi gases.

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