The role of multiparticle correlations and Cooper pairing in the formation of molecules in an ultracold gas of Fermi atoms with a negative scattering length

被引:0
作者
Babichenko, V. S. [1 ]
Kagan, Yu. [1 ]
机构
[1] Natl Res Ctr Kurchatov Inst, Moscow 123182, Russia
关键词
Bose-Einstein condensation - Electron gas - Fermions - Statistical mechanics;
D O I
10.1134/S1063776112100019
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The influence of multiparticle correlation effects and Cooper pairing in an ultracold Fermi gas with a negative scattering length on the formation rate of molecules is investigated. Cooper pairing is shown to cause the formation rate of molecules to increase, as distinct from the influence of Bose-Einstein condensation in a Bose gas on this rate. This trend is retained in the entire range of temperatures below the critical one. DOI: 10.1134/S1063776112100019
引用
收藏
页码:735 / 740
页数:6
相关论文
共 9 条
[1]  
Abrikosov A. A., 1965, QUANTUM FIELD THEORE
[2]   Coherence, correlations, and collisions: What one learns about Bose-Einstein condensates from their decay [J].
Burt, EA ;
Ghrist, RW ;
Myatt, CJ ;
Holland, MJ ;
Cornell, EA ;
Wieman, CE .
PHYSICAL REVIEW LETTERS, 1997, 79 (03) :337-340
[3]   Inelastic Collisions of a Fermi Gas in the BEC-BCS Crossover [J].
Du, X. ;
Zhang, Y. ;
Thomas, J. E. .
PHYSICAL REVIEW LETTERS, 2009, 102 (25)
[4]   Three-body problem in heteronuclear mixtures with resonant interspecies interaction [J].
Helfrich, K. ;
Hammer, H. -W. ;
Petrov, D. S. .
PHYSICAL REVIEW A, 2010, 81 (04)
[5]   Density ripples in expanding low-dimensional gases as a probe of correlations [J].
Imambekov, A. ;
Mazets, I. E. ;
Petrov, D. S. ;
Gritsev, V. ;
Manz, S. ;
Hofferberth, S. ;
Schumm, T. ;
Demler, E. ;
Schmiedmayer, J. .
PHYSICAL REVIEW A, 2009, 80 (03)
[6]  
KAGAN Y, 1985, JETP LETT+, V42, P209
[7]  
Kagan Yu., 1987, Soviet Physics - JETP, V66, P314
[8]  
Landau LD., 1980, Statistical Physics Part 2
[9]   Three-body problem in Fermi gases with short-range interparticle interaction [J].
Petrov, DS .
PHYSICAL REVIEW A, 2003, 67 (01) :4