YangMills correlators at finite temperature: A perturbative perspective
Abstract
We consider the twopoint correlators of YangMills theories at finite temperature in the Landau gauge. We employ a model for the corresponding YangMills correlators based on the inclusion of an effective mass term for gluons. The latter is expected to have its origin in the existence of Gribov copies. Oneloop calculations at zero temperature have been shown to agree remarkably well with the corresponding lattice data. We extend on this and perform a oneloop calculation of the Matsubara gluon and ghost twopoint correlators at finite temperature. We show that, as in the vacuum, an effective gluon mass accurately captures the dominant infrared physics for the magnetic gluon and ghost propagators. It also reproduces the gross qualitative features of the electric gluon propagator. In particular, we find a slight nonmonotonous behavior of the Debye mass as a function of temperature, however not as pronounced asin existing lattice results. A more quantitative description of the electric sector near the deconfinement phase transition certainly requires another physical ingredient sensitive to the order parameter of the transition.
 Publication:

Physical Review D
 Pub Date:
 May 2014
 DOI:
 10.1103/PhysRevD.89.105016
 arXiv:
 arXiv:1311.6116
 Bibcode:
 2014PhRvD..89j5016R
 Keywords:

 12.38.Mh;
 11.10.Wx;
 12.38.Bx;
 Quarkgluon plasma;
 Finitetemperature field theory;
 Perturbative calculations;
 High Energy Physics  Theory;
 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 16 pages, 12 figures