Enforced neutrality and color-flavor unlocking in the three-flavor Polyakov-loop NJL model

Understand

We study how the charge neutrality affects the phase structure of three-flavor PNJL model.

• We point out that, within the conventional PNJL model at finite density the color neutrality is missing because the Wilson line serves as an external ``colored'' field coupled to dynamical quarks.
• In this paper we heuristically assume that the model may still be applicable.
• To get color neutrality one has then to allow non vanishing color chemical potentials.