Hot and dense gas of quark quasi-particles
Joint Institute for Nuclear Research - 141980 Dubna, Moscow Region, Russia
2 Institute of Theoretical and Experimental Physics - 117259, Moscow, Russia
3 Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine UA-03680, Kiev-143, Ukraine
Accepted: 21 December 2010
Some features of hot and dense gas of quarks which are considered as the quasi-particles of the model Hamiltonian with four-fermion interaction are studied. Being adapted to the Nambu–Jona-Lasinio model this approach allows us to accommodate a phase transition similar to the nuclear liquid-gas one at the proper scale. It allows us to argue the existence of the mixed phase of vacuum and baryonic matter (even at zero temperature) as a plausible scenario of chiral symmetry (partial) restoration.
PACS: 11.10.-z – Field theory / 11.15.Tk – Other nonperturbative techniques
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