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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

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Volume 10, Issue 6

Issues

Volume 13 (2015)

Hard-thermal-loop QCD trace anomaly

Nan Su
Published Online: 2012-12-04 | DOI: https://doi.org/10.2478/s11534-012-0046-7

Abstract

In this proceedings I summarize results of QCD trace anomaly from recent three-loop hard-thermal-loop perturbation theory (HTLpt) calculations. I focus on the trace anomaly scaled by T 2 for pure-glue and N f = 3 QCD. The comparison to available lattice data suggests that for pure-glue QCD agreement between HTLpt results and lattice data for the trace anomaly begins at temperatures above 8 T c while when including quarks (N f = 3) agreement begins already at temperatures above 2 T c. The results in both cases indicate that at very high temperatures the T 2-scaled trace anomaly increases with temperature in accordance with the predictions of HTLpt.

Keywords: thermodynamics; resummation; hard-thermal-loop perturbation theory; quantum chromodynamics; quark-gluon plasma

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About the article

Published Online: 2012-12-04

Published in Print: 2012-12-01


Citation Information: Open Physics, Volume 10, Issue 6, Pages 1379–1381, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-012-0046-7.

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© 2012 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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