Pion screening mass at finite chemical potential

Abstract

We present a method to compute the responses of meson screening masses to the chemical potential by Taylor expanding the correlator using lattice QCD simulation. We start by comparing the free theory lattice results with the analytical expression. Then, using symmetry arguments, we obtain an expression for the correlator in a series of the chemical potential at finite temperature. Using this, we obtain the lowest order correction to the screening mass at a finite chemical potential for temperatures around 2.5 GeV. Our lattice analysis is limited to isoscalar chemical potential for the pseudoscalar channel. The calculations were performed using (2+1)-flavors of the Highly Improved Staggered Quark (HISQ/tree) action, with the ratio of the strange quark mass to the light quark mass $m_s/m_{\ell }=20$ corresponding to pion masses of 160 MeV.

18 pages, 15 figures; updated version of the paper

References in corpus (10)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Meson screening masses from lattice QCD with two light and the strange quark
• Taylor expansions and Padé approximants for cumulants of conserved charge fluctuations at non-vanishing chemical potentials
• Second order cumulants of conserved charge fluctuations revisited I. Vanishing chemical potentials
• Symmetries of spatial meson correlators in high temperature QCD
• In-medium modifications of open and hidden strange-charm mesons from spatial correlation functions
• Chiral spin symmetry and the QCD phase diagram
• HotQCD on Multi-GPU Systems
• Pion screening mass at finite chemical potential

Cited by in corpus (1)

• Pion screening mass at finite chemical potential