A strongly attractive Fermi gas in an optical lattice

被引：2

作者：

Fialko, O. ^{[2
]}

Gammal, A. ^{[1
]}

Ziegler, K. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil

[2] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

PHYSICS LETTERS A | 2010年 / 374卷 / 37期

基金：

巴西圣保罗研究基金会;

关键词：

Fermi mixtures; Hubbard model; BEC-BCS; BOSE-EINSTEIN CONDENSATION; CROSSOVER; TRANSITION; SUPERFLUID; INSULATOR; WEAK; BCS;

D O I：

10.1016/j.physleta.2010.07.038

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study strongly attractive fermions in an optical lattice superimposed by a trapping potential. We calculate the densities of fermions and condensed bound molecules at zero temperature. There is a competition between dissociated fermions and molecules leading to a reduction of the density of fermions at the trap center. (C) 2010 Elsevier B.V. All rights reserved.

引用

收藏

页码：3869 / 3874

页数：6

相关论文

共 42 条

[1]

Altland A., 2006, Condensed Matter Field Theory

[2] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].

ANDERSON, MH ;

ENSHER, JR ;

MATTHEWS, MR ;

WIEMAN, CE ;

CORNELL, EA .

SCIENCE, 1995, 269 (5221) :198-201

[3] THEORY OF SUPERCONDUCTIVITY [J].

BARDEEN, J ;

COOPER, LN ;

SCHRIEFFER, JR .

PHYSICAL REVIEW, 1957, 108 (05) :1175-1204

[4] Many-body physics with ultracold gases [J].

Bloch, Immanuel ;

Dalibard, Jean ;

Zwerger, Wilhelm .

REVIEWS OF MODERN PHYSICS, 2008, 80 (03) :885-964

[5] Quantum phase transitions in the Fermi-Bose Hubbard model [J].

Carr, LD ;

Holland, MJ .

PHYSICAL REVIEW A, 2005, 72 (03)

[6] Evidence for superfluidity of ultracold fermions in an optical lattice [J].

Chin, J. K. ;

Miller, D. E. ;

Liu, Y. ;

Stan, C. ;

Setiawan, W. ;

Sanner, C. ;

Xu, K. ;

Ketterle, W. .

NATURE, 2006, 443 (7114) :961-964

[7] BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS [J].

DAVIS, KB ;

MEWES, MO ;

ANDREWS, MR ;

VANDRUTEN, NJ ;

DURFEE, DS ;

KURN, DM ;

KETTERLE, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :3969-3973

[8] Onset of Fermi degeneracy in a trapped atomic gas [J].

DeMarco, B ;

Jin, DS .

SCIENCE, 1999, 285 (5434) :1703-1706

[9] CROSSOVER FROM BCS TO BOSE SUPERCONDUCTIVITY - TRANSITION-TEMPERATURE AND TIME-DEPENDENT GINZBURG-LANDAU THEORY [J].

DEMELO, CARS ;

RANDERIA, M ;

ENGELBRECHT, JR .

PHYSICAL REVIEW LETTERS, 1993, 71 (19) :3202-3205

[10] Quantum fluctuations in the superfluid state of the BCS-BEC crossover [J].

Diener, Roberto B. ;

Sensarma, Rajdeep ;

Randeria, Mohit .

PHYSICAL REVIEW A, 2008, 77 (02)

← 1 2 3 4 5 →