A new method for computation of QCD thermodynamics: EOS, specific heat and speed of sound

TL;DR

This paper introduces a novel operator method for calculating QCD thermodynamics, providing positive pressure across all temperatures and lattice spacings, and computes key thermodynamic quantities in quenched QCD within a specified temperature range.

Contribution

A new operator method for QCD thermodynamics that ensures positive pressure and allows continuum limit calculations of various thermodynamic quantities.

Findings

Positive pressure at all temperatures and lattice spacings

Continuum limit results for pressure, energy density, and entropy density

Calculated specific heat and speed of sound in quenched QCD

Abstract

We propose a new variant of the operator method for the computation of the equation of state of QCD, which yields positive pressure for all temperatures and all values of temporal lattice spacings. Using this new method, we calculate the continuum limit of pressure, energy density, entropy density, specific heat, and the speed of sound, in quenched QCD, for 0.9 \le T/T_c \le 3.