Analytic continuation of finite density QCD with heavy quarks in the strong coupling region

TL;DR

This paper investigates the complex behavior of finite density QCD with heavy quarks in the strong coupling regime by analyzing the effective potential and analytically continuing phase transition lines in the complex chemical potential plane.

Contribution

It provides a detailed analysis of thermodynamic singularities and Stokes boundaries, and performs explicit analytic continuation of phase transition lines in the complex chemical potential plane.

Findings

Identification of thermodynamic singularities and Stokes boundaries

Explicit analytic continuation of transition and crossover lines

Insights into the complex structure of finite density QCD with heavy quarks

Abstract

Complex nature of finite density QCD with heavy quarks in the strong coupling region is studied. For this purpose, we consider the effective potential as a function of Polyakov line, and study thermodynamic singularities and associated Stokes boundaries in the complex chemical potential plane. We also perform an explicit analytic continuation of the first order transition and crossover lines in the complex chemical potential plane.