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29 March 2024
 
  » arxiv » cond-mat/0605350

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The Fermi-Hubbard model at unitarity
Evgeni Burovski ; Nikolay Prokof’ev ; Boris Svistunov ; Matthias Troyer ;
Date 12 May 2006
Subject Superconductivity; Statistical Mechanics
AbstractWe simulate the dilute attractive Fermi-Hubbard model in the unitarity regime using a diagrammatic determinant Monte Carlo algorithm with worm-type updates. We obtain the dependence of the critical temperature on the filling factor $ u$ and, by extrapolating to $ u o 0$, determine the universal critical temperature of the continuum unitary Fermi gas in units of Fermi energy: $T_c/epsilon_F=0.152(7)$. We also determine the thermodynamic functions and show how the Monte Carlo results can be used for accurate thermometry of a trapped unitary gas.
Source arXiv, cond-mat/0605350
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