DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance

被引：23

作者：

Salasnich, L. ^{[1
,2
,3
,4
]}

Ancilotto, F. ^{[3
,4
]}

Manini, N. ^{[5
,6
]}

Toigo, F. ^{[3
,4
]}

机构：

[1] CNR INFM, I-35122 Padua, Italy

[2] CNISM, Unita Padova, I-35122 Padua, Italy

[3] Univ Padua, Dipartimento Fis G Galilei, I-35122 Padua, Italy

[4] Univ Padua, CNISM, I-35122 Padua, Italy

[5] Univ Milan, Dipartimento Fis, ETSF, I-20133 Milan, Italy

[6] Univ Milan, CNISM, I-20133 Milan, Italy

来源：

LASER PHYSICS | 2009年 / 19卷 / 04期

关键词：

EQUATION; BOSE; GAS; EXPANSION; CROSSOVER;

D O I：

10.1134/S1054660X09040173

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that both DC and AC Josephson effects with superfluid Fermi atoms in the BCS-BEC crossover can be described at zero temperature by a nonlinear Schrodinger equation (NLSE). By comparing our NLSE with mean-field extended BCS calculations, we find that the NLSE is reliable in the AAN side of the crossover up to the unitarity limit. The NLSE can be used for weakly-linked atomic superfluids also in the BCS side of the crossover by taking the tunneling energy as a phenomenological parameter.

引用

页码：636 / 641

页数：6

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