Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity

2006/02/28 by Evgeni Burovski, Nikolay Prokof’ev, Nikolay Prokof'ev +2 · 4 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat.stat-mech #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.96.160402

published as Phys. Rev. Lett. 96, 160402 (2006) · 4+1 pages, 4 figures, published version + erratum

openalex publication_date 2006/04/26 · arxiv created 2006/11/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

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 simulation of this system by diagrammatic determinant Monte Carlo method. The critical temperature in units of Fermi energy is found to be T(C)/epsilonF=0.152(7). We also report the behavior of the thermodynamic functions, and discuss the issues of thermometry of ultracold Fermi gases.

Citations

• Observation of resonance condensation of fermionic atom pairs
• Vortices and superfluidity in a strongly interacting Fermi gas
• Collective Excitations of a Degenerate Gas at the BEC-BCS Crossover
• Observation of Bose-Einstein Condensation of Molecules
• Resonance Superfluidity in a Quantum Degenerate Fermi Gas
• A Guide to Monte Carlo Simulations in Statistical Physics

Cited by

• The virial equation of state for unitary fermion thermodynamics with non-Gaussian correlations
• Universal properties of the ultracold Fermi gas
• Fermionic ground state at unitarity and Haldane exclusion statistics
• Universality in a 2-Component Fermi System at Finite Temperature