Critical Temperature Curve in BEC-BCS Crossover
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/ɛF 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/ɛF=0.152(7).
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2008
- DOI:
- arXiv:
- arXiv:0805.3047
- Bibcode:
- 2008PhRvL.101i0402B
- Keywords:
-
- 05.30.Jp;
- 03.75.Ss;
- 05.10.Ln;
- 71.10.Fd;
- Boson systems;
- Degenerate Fermi gases;
- Monte Carlo methods;
- Lattice fermion models;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Superconductivity
- E-Print:
- revtex, 4 pages, 3 figures, published version