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

限制/解除限制过渡描述了Polyakov-Nambu-Jona-Lasinio（PNJL）模型已扩展为可在零温度范围内使用。在这项研究中，通过引入对跟踪的Polyakov回路的依赖关系来修改原始PNJL模型的标量和矢量通道交互强度。以这种方式，有效的相互作用取决于夸克相，并且进而在零温度下也使夸克对胶子区的后反应。从量子色动力学的一般角度来看，这是预期的功能。详细研究了扩展模型（PNJL0）的热力学。它与Polyakov势的合适选择一起呈现，即使在\（T = 0 \）时，一阶受限/受限夸克相变。我们还表明，矢量通道起着重要的作用，以便允许PNJL0模型的\（\ varPhi \ ne 0 \）解决方案。此外，结合的四元和非约束阶段对矢量相互作用强度的敏感性以及拟定的\（T = 0 \）下的Polyakov环电势的参数化，可以为相关参数的整体值设置一个窗口。