Fixed scale approach to equation of state in lattice QCD

2008/09/30 by T. Umeda, S. Ejiri, Shinji Ejiri +7 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics #hep-lat

paper · pdf · doi:10.1103/physrevd.79.051501

published as Phys.Rev.D79:051501,2009 · 5 pages, ReVTeX, 4 figures, version to appear in PRD

arxiv created 2009/02/15 · openalex publication_date 2009/03/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

A new approach to study the equation of state in finite-temperature QCD is proposed on the lattice. Unlike the conventional method in which the temporal lattice size N_t is fixed, the temperature T is varied by changing N_t at the fixed lattice scale. The pressure of the hot QCD plasma is calculated by the integration of the trace anomaly with respect to T at the fixed lattice scale. This ``T-integral method'' is tested in quenched QCD on isotropic and anisotropic lattices and is shown to give reliable results, especially at intermediate and low temperatures.

Citations

• Lattice Monte Carlo data versus perturbation theory

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