Critical temperature and thermodynamics of attractive fermions at unitarity

被引：201

作者：

Burovski, E ^{[1
]}

Prokof'ev, N

Svistunov, B

Troyer, M

机构：

[1] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[2] Russian Res Ctr Kurchatov Inst, Moscow 123182, Russia

[3] Univ Trent, Dipartimento Fis, I-38050 Povo, Italy

[4] INFM, BEC, I-38050 Povo, Italy

[5] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 16期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.96.160402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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/epsilon(F)=0.152(7). We also report the behavior of the thermodynamic functions, and discuss the issues of thermometry of ultracold Fermi gases.

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页数：4

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