Work

Three-loop HTL QCD thermodynamics

Year: 2011

Type: article

Abstract: The hard-thermal-loop perturbation theory (HTLpt) framework is used to calculate the thermodynamic functions of a quark-gluon plasma to three-loop order. This is the highest order accessible by finite temperature perturbation theory applied to a non-Abelian gauge theory before the high-temperature infrared catastrophe. All ultraviolet divergences are eliminated by renormalization of the vacuum, the HTL mass parameters, and the strong coupling constant. After choosing a prescription for the mass parameters, the three-loop results for the pressure and trace anomaly are found to be in very good agreement with recent lattice data down to T ~ 2 − 3T c , which are temperatures accessible by current and forthcoming heavy-ion collision experiments.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep08(2011)053

Authors: Jens O. Andersen, Lars E. Leganger, Michael Strickland, Nan Su

Institutions: Norwegian University of Science and Technology, Gettysburg College, Frankfurt Institute for Advanced Studies, Chinese Academy of Sciences, Kavli Institute for Theoretical Sciences

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:

Funders: Norges Teknisk-Naturvitenskapelige Universitet, Norges Forskningsråd, Kavli Institute for Theoretical Physics, University of California, Santa Barbara