Nonperturbative screening of the Landau pole
Abstract
Based on the trace anomaly for the energy-momentum tensor, an effective theory for the thermodynamics of the deconfining phase, and by assuming the asymptotic behavior to be determined by one-loop perturbation theory, we compute the nonperturbative beta function for the fundamental coupling g in SU(2) and SU(3) Yang-Mills 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
- E-Print:
- 11 pages, 3 figures