Collective oscillations of a trapped fermi gas near the unitary limit

被引:83
作者
Bulgac, A [1 ]
Bertsch, GF
机构
[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[2] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA
关键词
D O I
10.1103/PhysRevLett.94.070401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We calculate the oscillation frequencies of trapped Fermi condensate with particular emphasis on the equation of state of the interacting Fermi system. We confirm Stringari's finding that the frequencies are independent of the interaction in the unitary limit, and we extend the theory away from that limit, where the interaction does affect the frequencies of the compressional modes only.
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页数:4
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共 44 条
[1]   Observation of vortex lattices in Bose-Einstein condensates [J].
Abo-Shaeer, JR ;
Raman, C ;
Vogels, JM ;
Ketterle, W .
SCIENCE, 2001, 292 (5516) :476-479
[2]   Collective excitations of a degenerate Fermi vapour in a magnetic trap [J].
Amoruso, M ;
Meccoli, I ;
Minguzzi, A ;
Tosi, MP .
EUROPEAN PHYSICAL JOURNAL D, 1999, 7 (03) :441-447
[3]  
[Anonymous], 1975, SOV J NUCL PHYS
[4]   Equation of state of a Fermi gas in the BEC-BCS crossover: A quantum Monte Carlo study [J].
Astrakharchik, GE ;
Boronat, J ;
Casulleras, J ;
Giorgini, S .
PHYSICAL REVIEW LETTERS, 2004, 93 (20) :200404-1
[5]   The MBX Challenge Competition: A neutron matter model [J].
Baker, GA .
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2001, 15 (10-11) :1314-1320
[6]   Low-energy collective excitations in a superfluid trapped Fermi gas [J].
Baranov, MA ;
Petrov, DS .
PHYSICAL REVIEW A, 2000, 62 (04) :1-4
[7]   Collective excitations of a degenerate gas at the BEC-BCS crossover [J].
Bartenstein, M ;
Altmeyer, A ;
Riedl, S ;
Jochim, S ;
Chin, C ;
Denschlag, JH ;
Grimm, R .
PHYSICAL REVIEW LETTERS, 2004, 92 (20) :203201-1
[8]  
BERTSCH GF, PHYSICS0403125
[9]  
Bishop RF, 2001, INT J MOD PHYS B, V15, pIII
[10]   Vortex state in a strongly coupled dilute atomic fermionic superfluid [J].
Bulgac, A ;
Yu, YL .
PHYSICAL REVIEW LETTERS, 2003, 91 (19)