Lattice SU(3) thermodynamics and the onset of perturbative behaviour

Sz Borsányi, G. Endrodi, Z. Fodor, S. D. Katz, K. K. Szabó

Research output: Contribution to journalConference articlepeer-review

Abstract

We present the equation of state (pressure, trace anomaly, energy density and entropy density) of the SU(3) gauge theory from lattice field theory in an unprecedented precision and temperature range. We control both finite size and cut-off effects. The studied temperature window (0.7 ... 1000Tc) stretches from the glueball dominated system into the perturbative regime, which allows us to discuss the range of validity of these approaches. From the critical couplings on fine lattices we get TcMS = 1.26(7) and use this ratio to express the perturbative free energy in Tc units. We also determine the preferred renormalization scale of the Hard Thermal Loop scheme and we fit the unknown g6 order perturbative coefficient at extreme high temperatures T > 100Tc. We furthermore quantify the nonperturbative contribution to the trace anomaly using two simple functional forms.

Original languageEnglish (US)
JournalProceedings of Science
Volume105
StatePublished - 2010
Event28th International Symposium on Lattice Field Theory, Lattice 2010 - Villasimius, Sardinia, Italy
Duration: Jun 14 2010Jun 19 2010

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Lattice SU(3) thermodynamics and the onset of perturbative behaviour'. Together they form a unique fingerprint.

Cite this