Thermodynamical phases in a PNJL model at zero temperature

Abstract The confinement/deconfinement transition described the Polyakov–Nambu–Jona–Lasinio (PNJL) model is extended to be operative at zero temperature regime. In this study, scalar and vector channel interaction strengths of original PNJL are modified by introducing a dependence on traced Polyakov loop. such way effective interactions depend quark phase in turn provides backreaction quarks gluonic sector, also temperature. On general grounds from quantum chromodynamics an expected feature. thermodynamics (PNJL0) studied detail. It presents along with suitable choice potential, first order confined/deconfined even $$T=0$$ T = 0 . We show that plays important role allow $$\varPhi \ne 0$$ Φ ≠ solutions for PNJL0 model. Furthermore, sensitivity combined quarkyonic deconfinement phases strength proposed parametrization Polyakov-loop potential allowed set window bulk values relevant parameters.