Equation of State for QCD at finite temperature and density. Resummation versus lattice data
arXiv:1411.1253 · doi:10.1063/1.4938592
Abstract
The perturbative series for finite-temperature field theories has very poor convergence properties and one needs a way to reorganize it. In this talk, I review two ways of reorganizing the perturbative series for field theories at finite temperature and chemical potential, namely hard-thermal-loop perturbation theory (HTLpt) and dimensional reduction (DR). I will present results for the pressure, trace anomaly, speed of sound and the quark susceptibilities from a 3-loop HTLpt calculation and for the quark susceptibilities using DR at four loops. A careful comparison with available lattice data shows good agreement for a number of physical quantities.
Invited talk at 1th Quark Confinement and the Hadron Spectrum, September 8-12 2014, Saint Petersburg, Russia. 12 pages. 18 figs
References in corpus (8)
- The QCD equation of state with dynamical quarks
- Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
- Three-loop HTLpt thermodynamics at finite temperature and chemical potential
- The pressure of deconfined QCD for all temperatures and quark chemical potentials
- Three-loop HTL gluon thermodynamics at intermediate coupling
- Z(3)-symmetric effective theory for SU(3) Yang-Mills theory at high temperature
- Four-loop screened perturbation theory
- Center-Symmetric Effective Theory for High-Temperature SU(2) Yang-Mills Theory