Nambu-Jona-Lasinio model of dense three-flavor matter with axial anomaly: The low temperature critical point and BEC-BCS diquark crossover

Hiroaki Abuki, Gordon Baym, Tetsuo Hatsuda, Naoki Yamamoto

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

We study the QCD phase structure in the three-flavor Nambu-Jona-Lasinio model, incorporating the interplay between the chiral and diquark condensates induced by the axial anomaly. We demonstrate that for an appropriate range of parameters of the model, the interplay leads to the low temperature critical point in the phase structure predicted by a previous Ginzburg-Landau analysis. We also show that a Bose-Einstein condensate (BEC) of diquark molecules emerges in the intermediate density region, and as a result, a BEC-BCS crossover is realized with increasing quark chemical potential.

Original languageEnglish
Article number125010
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number12
DOIs
Publication statusPublished - 2010 Jun 14
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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