Finite size scaling for 4-flavor QCD with finite chemical potential

TL;DR

This study investigates the phase diagram of 4-flavor QCD at finite chemical potential using finite size scaling, confirming a first-order phase transition at specific parameters through multiple statistical measures.

Contribution

It applies finite size scaling analysis with phase-reweighting to determine the order of phase transition in 4-flavor QCD at finite chemical potential, providing new evidence for first-order transition at certain parameters.

Findings

Transition is consistent with first order at specified parameters.

Finite size scaling supports the first-order transition conclusion.

Results align with previous canonical simulation reports.

Abstract

We explore the phase diagram spanned by the temperature and the chemical potential for 4-flavor QCD by the phase-reweighting approach. In order to determine the order of phase transition, we perform finite size scaling studies for various quantities, for example, susceptibility, kurtosis and Challa-Landau-Binder cumulant. At the parameter (beta=1.60, kappa=0.1371, c_sw=1.9655 and N_T=4), where the Kentucky group reported a first-order phase transition in their canonical simulation, we observe that the transition is consistent with being of first order.