Nonperturbative screening of the Landau pole
Abstract
Based on the trace anomaly for the energymomentum tensor, an effective theory for the thermodynamics of the deconfining phase, and by assuming the asymptotic behavior to be determined by oneloop perturbation theory, we compute the nonperturbative beta function for the fundamental coupling g in SU(2) and SU(3) YangMills theory. With increasing temperature we observe a very rapid approach to the perturbative running. The Landau pole is nonperturbatively screened.
 Publication:

Physical Review D
 Pub Date:
 March 2008
 DOI:
 10.1103/PhysRevD.77.065022
 arXiv:
 arXiv:0704.2526
 Bibcode:
 2008PhRvD..77f5022G
 Keywords:

 12.38.Aw;
 11.15.Tk;
 General properties of QCD;
 Other nonperturbative techniques;
 High Energy Physics  Theory
 EPrint:
 11 pages, 3 figures