Evgeni Burovski et al 2006 New J. Phys. 8 153 doi:10.1088/1367-2630/8/8/153
The Fermi–Hubbard model at unitarity
Focus on Cold Atoms in Optical LatticesEvgeni Burovski1,5, Nikolay Prokof'ev1,2,3, Boris Svistunov1,2 and Matthias Troyer4
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We simulate the dilute attractive Fermi–Hubbard model in the unitarity regime using a diagrammatic determinant Monte Carlo (MC) algorithm with worm-type updates. We obtain the dependence of the critical temperature on the filling factor ν and, by extrapolating to ν → 0, determine the universal critical temperature of the continuum unitary Fermi gas in units of Fermi energy: Tc/εF = 0.152(7). We also determine the thermodynamic functions and show how the MC results can be used for accurate thermometry of a trapped unitary gas.
- An erratum was added to this paper on 21 December 2006. Please see the PDF file.
- PACS
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03.75.Ss Degenerate Fermi gases
05.30.Fk Fermion systems and electron gas
02.60.Ed Interpolation; curve fitting
03.75.Hh Static properties of condensates; thermodynamical, statistical and structural properties
- Subjects
- Dates
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Issue 8 (August 2006)
Received 1 May 2006
Published 30 August 2006
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The Fermi–Hubbard model at unitarity
Evgeni Burovski et al 2006 New J. Phys. 8 153
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