The thermodynamic and the continuum limit of meson screening masses

TL;DR

This study investigates how meson screening masses behave in the deconfined phase of QCD, analyzing their dependence on lattice actions and extrapolations to the continuum limit at different temperatures.

Contribution

It compares the thermodynamic and continuum limits of meson screening masses using different lattice actions in quenched QCD at high temperatures.

Findings

Screening masses differ between actions at finite lattices.

Different extrapolation methods are employed to reach the continuum.

Results suggest convergence of masses in the continuum limit.

Abstract

We present results on the thermodynamic and continuum limit of meson screening masses in the deconfined phase, using standard staggered and non-perturbatively clover-improved Wilson fermions in the quenched approximation with light quark masses. For two temperatures, 1.5 Tc and 3.0 Tc, it is found that on finite lattices screening masses differ between the actions. We study if both actions reproduce the same masses in the continuum by employing different methods of extrapolation to the thermodynamic and continuum limit.