Work

QCD Equation of State with N f = 3 Flavors up to the Electroweak Scale

Year: 2025

Type: article

Abstract: The equation of state of quantum chromodynamics with N_{f}=3 flavors is determined nonperturbatively in the range of temperatures between 3 and 165 GeV with a precision of about 0.5%-1.0%. The calculation is carried out by numerical simulations of lattice gauge theory discretized à la Wilson with shifted boundary conditions in the compact direction. At each given temperature the entropy density is computed at several lattice spacings in order to extrapolate the results to the continuum limit. Taken at face value, data point straight to the Stefan-Boltzmann value by following a linear behavior in the strong coupling constant squared. They are also compatible with the known perturbative formula supplemented by higher order terms in the coupling constant, a parametrization which describes well our data together with those present in the literature down to 500 MeV.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.134.201904

Authors: Matteo Bresciani, Mattia Dalla Brida, Leonardo Giusti, Michele Pepe

Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca, University of Milano-Bicocca

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: European Commission, Partnership for Advanced Computing in Europe AISBL, Barcelona Supercomputing Center, NextGenerationEU