Detection of the BCS transition in a trapped Fermi gas

被引:20
作者
Bruun, GM [1 ]
Clark, CW [1 ]
机构
[1] US Dept Commerce, Natl Inst Stand & Technol, Div Electron & Opt Phys, Gaithersburg, MD 20899 USA
关键词
D O I
10.1088/0953-4075/33/19/310
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We investigate theoretically the quasiparticle properties of a trapped gas of fermionic atoms in both the normal and the superfluid phases. Our analysis, which accounts for the shell structure of the normal phase spectrum, shows that the single-particle response of the gas to a modulation of the trapping frequency should indicate the onset of superfluidity. The results are discussed in the context of current experiments on trapped Fermi gases.
引用
收藏
页码:3953 / 3959
页数:7
相关论文
共 17 条
[1]   Triplet s-wave resonance in Li-6 collisions and scattering lengths of Li-6 and Li-7 [J].
Abraham, ERI ;
McAlexander, WI ;
Gerton, JM ;
Hulet, RG ;
Cote, R ;
Dalgarno, A .
PHYSICAL REVIEW A, 1997, 55 (05) :R3299-R3302
[2]   Single-particle excitations and the order parameter for a trapped superfluid Fermi gas [J].
Baranov, MA .
JETP LETTERS, 1999, 70 (06) :396-402
[3]   BCS theory for trapped ultracold fermions [J].
Bruun, G ;
Castin, Y ;
Dum, R ;
Burnett, K .
EUROPEAN PHYSICAL JOURNAL D, 1999, 7 (03) :433-439
[4]   Interacting Fermi gas in a harmonic trap [J].
Bruun, GM ;
Burnett, K .
PHYSICAL REVIEW A, 1998, 58 (03) :2427-2434
[5]   Trapped Fermi gases [J].
Butts, DA ;
Rokhsar, DS .
PHYSICAL REVIEW A, 1997, 55 (06) :4346-4350
[6]  
de Gennes P. G., 1966, SUPERCONDUCTIVITY ME
[7]   Onset of Fermi degeneracy in a trapped atomic gas [J].
DeMarco, B ;
Jin, DS .
SCIENCE, 1999, 285 (5434) :1703-1706
[8]   Exploring a quantum degenerate gas of fermionic atoms [J].
DeMarco, B ;
Jin, DS .
PHYSICAL REVIEW A, 1998, 58 (06) :R4267-R4270
[9]  
Fetter A. L., 1971, QUANTUM THEORY MANY
[10]   CO2-laser optical lattice with cold rubidium atoms [J].
Friebel, S ;
D'Andrea, C ;
Walz, J ;
Weitz, M ;
Hansch, TW .
PHYSICAL REVIEW A, 1998, 57 (01) :R20-R23