期刊
PHYSICAL REVIEW D
卷 80, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.056005
关键词
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资金
- Spanish DGI
- FEDER [FIS2008-01143/FIS]
- Junta de Andalucia [FQM-225-05]
- EU [RII3-CT-2004506078]
- U.S. Department of Energy [DE-AC02-98CH10886]
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 q (q) over bar free energy, yielding roughly similar numerical values. The role of glueballs near the transition is also discussed.
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