The powers of deconfinement
| Autor: | Lorenzo Luis Salcedo, Eugenio Megias Fernandez, Eugenio Megias, Enrique Ruiz Arriola |
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| Rok vydání: | 2009 |
| Předmět: |
Physics
Quantum chromodynamics Nuclear and High Energy Physics Phase transition Particle physics High Energy Physics::Lattice High Energy Physics::Phenomenology FOS: Physical sciences Inverse Gluon condensate Scale invariance Deconfinement Atomic and Molecular Physics and Optics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Lattice (order) Perturbation theory (quantum mechanics) |
| Zdroj: | Nuclear Physics B - Proceedings Supplements. 186:256-259 |
| ISSN: | 0920-5632 |
| DOI: | 10.1016/j.nuclphysbps.2008.12.057 |
| Popis: | The trace anomaly of gluodynamics encodes the breakdown of classical scale invariance due to interactions around the deconfinement phase transition. While it is expected that at high temperatures perturbation theory becomes applicable we show that current lattice calculations are far from the perturbative regime and are dominated instead by inverse even power corrections in the temperature, while the total perturbative contribution is estimated to be extremely small and compatible with zero within error bars. We provide an interpretation in terms of dimension-two gluon condensate of the dimensionally reduced theory which value agrees with a similar analysis of power corrections from available lattice data for the renormalized Polyakov loop and the heavy quark-antiquark free energy in the deconfined phase of QCD. To appear in the proceedings of 14th High-Energy Physics International Conference in Quantum Chromodynamics (QCD 08), Montpellier, France, 7-12 Jul 2008 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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