Trace Anomaly, Thermal Power Corrections and Dimension Two condensates in the deconfined phase
arXiv:0903.1060 · doi:10.1103/PhysRevD.80.056005
Abstract
The trace anomaly of gluodynamics on the lattice shows clear fingerprints of a dimension two condensate above the phase transition. The condensate manifests itself through even powers of the inverse temperature while the total perturbative contribution corresponds to a mild temperature dependence and turns out to be compatible with zero within errors. We try several resummation methods based on a renormalization group improvement. The trace anomaly data are analyzed and compared with other determinations of the dimension two condensate based on the Polyakov loop and the heavy qq free energy, yielding roughly similar numerical values. The role of glueballs near the transition is also discussed.
15 pages, 7 figures
References in corpus (13)
- The QCD Equation of State with almost Physical Quark Masses
- The Physics of Glueballs
- Fuzzy Bags and Wilson Lines
- Fixed Scale Approach to Equation of State in Lattice QCD
- Three-dimensional physics and the pressure of hot QCD
- Some Thermodynamic Aspects of Pure Glue, Fuzzy Bags and Gauge/String Duality
- Finite Temperature Sum Rules in Lattice Gauge Theory
- Electric-magnetic asymmetry of the A^2 condensate and the phases of Yang-Mills theory
- Thermodynamics of SU(3) Gauge Theory in 2 + 1 Dimensions
- Nonperturbative contributions to the QCD pressure
- Pion electromagnetic form factor, perturbative QCD, and large-Nc Regge models
- Dimension 2 condensates and Polyakov Chiral Quark Models
- The Powers of Deconfinement