The strange critical endpoint and isentropic trajectories in an Extended PNJL Model with Eight Quark Interactions

TL;DR

This paper investigates the phase diagram of strongly interacting matter using an extended PNJL model, identifying multiple critical endpoints and analyzing isentropic trajectories around phase transitions and critical points.

Contribution

It introduces an extended PNJL model with eight-quark interactions and explores multiple critical endpoints and isentropic trajectories in the phase diagram.

Findings

Multiple critical endpoints identified in the phase diagram.

Isentropic trajectories cross chiral phase transitions and critical endpoints.

Analysis covers both crossover and first-order transition regions.

Abstract

In this work, we explore the possible existence of several critical endpoints in the phase diagram of strongly interacting matter using an extended PNJL model with 't Hooft determinant and eight quark interactions in the up, down and strange sectors. Besides, we also study the isentropic trajectories crossing both (light and strange) chiral phase transitions and around the critical endpoint in both the crossover and first-order transition regions.