Burovski, Evgeni and Kozik, Evgeny and Prokof'ev, Nikolay and Svistunov, Boris and Troyer, Matthias (2008) Critical Temperature Curve in BEC-BCS Crossover. Physical review letters, 101 (9): 090402. ISSN 1079-7114
Abstract
The strongly correlated regime of the crossover from Bardeen-Cooper-Schrieffer pairing to Bose-Einstein condensation can be realized by diluting a system of two-component fermions with a short-range attractive interaction. We investigate this system via a novel continuous-space-time diagrammatic determinant Monte Carlo method and determine the universal curve Tc/εF for the transition temperature between the normal and the superfluid states as a function of the scattering length with the maximum on the Bose-Einstein condensation side. At unitarity, we confirm that Tc/εF=0.152(7).