Thermodynamic instabilities in dynamical quark models with complex conjugate mass poles (CROSBI ID 186888)
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Podaci o odgovornosti
Benić, Sanjin ; Blaschke, David ; Buballa, Michael
engleski
Thermodynamic instabilities in dynamical quark models with complex conjugate mass poles
We show that the Cornwall-Jackiw-Tomboulis thermodynamic potential of dynamical quark models with a quark propagator represented by complex conjugate mass poles inevitably exhibits thermodynamic instabilities. We find that the minimal coupling of the quark sector to a Polyakov loop potential can strongly suppress but not completely remove such instabilities. This general effect is explicitly demonstrated in the framework of a covariant, chirally symmetric, effective quark model.
non-local NJL; confinement; Polyakov loop
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Podaci o izdanju
86
2012.
074002-1-074002-13
objavljeno
1550-7998
10.1103/PhysRevD.86.074002