QCD trace anomaly

Jens O. Andersen, Lars E. Leganger, Michael Strickland, and Nan Su
Phys. Rev. D 84, 087703 – Published 14 October 2011; Erratum Phys. Rev. D 84, 089906 (2011)

Abstract

In this brief report we compare the predictions of a recent next-to-next-to-leading order hard-thermal-loop perturbation theory (HTLpt) calculation of the QCD trace anomaly to available lattice data. We focus on the trace anomaly scaled by T2 in two cases: Nf=0 and Nf=3. When using the canonical value of μ=2πT for the renormalization scale, we find that for Yang-Mills theory (Nf=0) agreement between HTLpt and lattice data for the T2-scaled trace anomaly begins at temperatures on the order of 8Tc, while when including quarks (Nf=3) agreement begins already at temperatures above 2Tc. In both cases we find that at very high temperatures the T2-scaled trace anomaly increases with temperature in accordance with the predictions of HTLpt.

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  • Received 16 June 2011
  • Corrected 19 October 2011

DOI:https://doi.org/10.1103/PhysRevD.84.087703

© 2011 American Physical Society

Corrections

19 October 2011

Erratum

Publisher’s Note: QCD trace anomaly [Phys. Rev. DPRVDAQ1550-7998 84, 087703 (2011)10.1103/PhysRevD.84.087703]

Jens O. Andersen, Lars E. Leganger, Michael Strickland, and Nan Su
Phys. Rev. D 84, 089906 (2011)

Authors & Affiliations

Jens O. Andersen1, Lars E. Leganger1, Michael Strickland2,3,4, and Nan Su5,1

  • 1Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
  • 2Department of Physics, Gettysburg College, Gettysburg, Pennsylvania 17325, USA
  • 3Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93117, USA
  • 4Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany
  • 5Faculty of Physics, Bielefeld University, D-33615 Bielefeld, Germany

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Issue

Vol. 84, Iss. 8 — 15 October 2011

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