CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2012, Vol. 29 ›› Issue (3): 466-474.

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Quantum Analysis of BCS-BEC Crossover in Feshbach Resonances

LI Jing1, LIU Bin2   

  1. 1. School of Science, Beijing Institute of Technology, Beijing 100081, China;
    2. Center for Applied Physics and Technology, Peking University, Beijing 100084, China
  • Received:2011-09-05 Revised:2011-11-21 Online:2012-05-25 Published:2012-05-25

Abstract: We consider a many-particle model which concludes interaction of molecular BEC,and gave a semi-analytical method to calculate conversion efficiency of Fermion atom pairs convert to Boson molecules.The method used mainly independent crossing approximation.With mean-field theory we get an equation for conversione efficiency.Calculating results are supported by numerical simulation and experiment of 6Li by Hulet group in 2003.

Key words: Feshbach resonance, ICA, BCS-BEC crossover

CLC Number: