Chemical potential response of meson masses at finite temperature

TL;DR

This study investigates how meson masses respond to changes in chemical potential at high temperature using lattice QCD, revealing phase-dependent behavior of the mass response.

Contribution

It provides the first lattice QCD results on the chemical potential response of meson masses across confinement and deconfinement phases.

Findings

Negative mass response in confinement phase

Positive mass response in deconfinement phase

Preliminary lattice results for mesons with different quark compositions

Abstract

We study the response of meson masses to the chemical potential ($\partial{m}/\partial{\mu}$) at high temperature and at zero chemical potential on $N_f=2$ lattice with staggered fermions. Preliminary results for the meson composed of different quarks show that $\partial{m}/\partial{\mu}|_{\mu=0}$ is negative in the confinement phase and positive in the deconfinement phase.