QCD at finite chemical potential with six time slices

TL;DR

This paper uses lattice QCD simulations with six time slices to analyze the baryon number susceptibility's Taylor expansion, estimating the QCD critical point and exploring finite chemical potential effects.

Contribution

It provides new lattice simulation results at a finer lattice cutoff and bounds the location of the QCD critical point using series convergence analysis.

Findings

Bounded the QCD critical point at T^E/T_c = 0.94 and mu_B^E/T < 1.8

Determined the radius of convergence of the series at various temperatures

Linked susceptibilities to finite chemical potential extrapolations

Abstract

We investigate the Taylor expansion of the baryon number susceptibility, and hence, pressure, in a series in the baryon chemical potential (mu_B) through a lattice simulation with light dynamical staggered quarks at a finer lattice cutoff a=1/6T. We determine the QCD cross over coupling at mu_B=0. We find the radius of convergence of the series at various temeperatures, and bound the location of the QCD critical point to be T^E/T_c = 0.94 and mu_B^E/T < 1.8. We also investigate the extrapolation of various susceptibilities and linkages to finite chemical potential.