Work

Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity

Year: 2006

Type: article

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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.96.160402

Authors: Evgeni Burovski, Nikolay Prokof’ev, Boris Svistunov, Matthias Troyer

Institutions: University of Massachusetts Amherst, University of Trento, Kurchatov Institute, ETH Zurich, Institute for Theoretical Physics

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Eidgenössische Technische Hochschule Zürich, Oak Ridge National Laboratory

Awards: Theoretical Studies of Rotating Trapped Atomic Gases, COLLABORATIVE RESEARCH: ITR-(ASE)-(sim): Worm algorithm and diagrammatic Monte Carlo for strongly correlated atomic and condensed matter systems