Nambu Jona-Lasinio Model of \bar q q Bose Einstein Condensation and pseudogap phase

Abstract

We show the existence of a pseudogap phase in the Nambu Jona-Lasinio model of quark interactions. In the pseudogap phase chiral symmetry is restored but q\bar q pseudoscalar mesons still exist and they are massive. Such a behavior is intermediate between a BCS superconductor and a Bose Einstein Condensate. We suggest the relevance of this phenomenon for an understanding of recent lattice QCD and experimental data.

arXiv comment15 pages, 2 figures. Version to appear in Phys. Rev. D (a discussion on the cutoff and a few references added)

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• BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD
• BCS-BEC crossover in a relativistic superfluid and its significance to quark matter
• BCS/BEC crossover in Quark Matter and Evolution of its Static and Dynamic properties
• Effective degrees of freedom and gluon condensation in the high temperature deconfined phase
• Quark Spectrum above but near Critical Temperature of Chiral Transition
• Monte Carlo simulation of monolayer graphene at non-zero temperature
• Relativistic BCS-BEC Crossover at Finite Temperature and Its Application to Color Superconductivity
• BCS-BEC crossover in dense relativistic matter: Collective excitations
• Bose-Einstein condensate strings
• Meson Spectral Functions at Finite Temperature and Isospin Density with Functional Renormalization Group
• Thin accretion disks around cold Bose-Einstein Condensate stars
• Relation Between Chiral Susceptibility and Solutions of Gap Equation in Nambu--Jona-Lasinio Model
• Pionic BEC--BCS crossover at finite isospin chemical potential
• Thermodynamic Geometry of Strongly Interacting Matter
• Isotropic Lifshitz Scaling in four dimensions
• Confinement Horizon and QCD Entropy
• Unruh thermalization, gluon condensation and freeze-out