Robustness of baryon-strangeness correlation and related ratios of susceptibilities

TL;DR

This study uses lattice QCD simulations to demonstrate that baryon-strangeness correlations and related ratios are robust, nearly independent of lattice spacing, and close to ideal gas limits across a range of temperatures.

Contribution

It provides the first comprehensive continuum limit analysis of conserved charge correlations in quenched lattice QCD at finite temperatures.

Findings

Correlations are nearly independent of lattice spacing.

Quantities are close to ideal gas limits.

Results confirm robustness of the Wroblewski parameter.

Abstract

Using quenched lattice QCD simulations we investigate the continuum limit of baryon-strangeness correlation and other related conserved charge-flavour correlations for temperatures T_c<T\le2T_c. By working with lattices having large temporal extents (N_\tau=12, 10, 8, 4) we find that these quantities are almost independent of the lattice spacing, i.e, robust. We also find that these quantities have very mild dependence on the sea quark mass and acquire values which are very close to their respective ideal gas limits. Our results also confirm robustness of the Wroblewski parameter.