Nambu-Jona-Lasinio model description of weakly interacting Bose condensate and BEC-BCS crossover in dense QCD-like theories

  title={Nambu-Jona-Lasinio model description of weakly interacting Bose condensate and BEC-BCS crossover in dense QCD-like theories},
  author={Lianyi He},
  journal={Physical Review D},
  • Lianyi He
  • Published 12 July 2010
  • Physics
  • Physical Review D
QCD-like theories possess a positively definite fermion determinant at finite baryon chemical potential ${\ensuremath{\mu}}_{B}$ and the lattice simulation can be successfully performed. While the chiral perturbation theories are sufficient to describe the Bose condensate at low density, to describe the crossover from Bose-Einstein condensation (BEC) to BCS superfluidity at moderate density we should use some fermionic effective model of QCD, such as the Nambu--Jona-Lasinio model. In this paper… 
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