Lattice simulation of $QC_2D$ with $N_f=2$ at non-zero baryon density

TL;DR

This paper reports lattice simulations of two-flavor QC2D at non-zero baryon density, showing how chemical potential affects chiral symmetry and baryon density, with results aligning with chiral perturbation theory at low densities.

Contribution

First lattice study of QC2D with two flavors at finite chemical potential, analyzing phase transitions and comparing with theoretical predictions.

Findings

Chiral symmetry is restored at high chemical potential.

Baryon number density matches ChPT at low chemical potential.

Polyakov loop and chiral condensate vary with chemical potential.

Abstract

The lattice simulations of $QC_2D$ with two flavors of staggered fermions and non-zero quark chemical potential $\mu_q$ have been performed. Dependencies of the Polyakov loop, chiral condensate and baryon number density on $\mu_q$ were studied. We found that an increase of the baryon chemical potential leads to chiral symmetry restoration. At small values of $\mu_q$, our results for the baryon number density agree with ChPT predictions.