Topological susceptibility of SU(N) gauge theories at finite temperature
Abstract
We investigate the largeN behavior of the topological susceptibility chi in fourdimensional SU(N) gauge theories at finite temperature, and in particular across the finitetemperature transition at T_{c}. For this purpose, we consider the lattice formulation of the SU(N) gauge theories and perform Monte Carlo simulations for N = 4,6. The results indicate that chi has a nonvanishing largeN limit for T < T_{c}, as at T = 0, and that the topological properties remain substantially unchanged in the lowtemperature phase. On the other hand, above the deconfinement phase transition, chi shows a large suppression. The comparison between the data for N = 4 and N = 6 hints at a vanishing largeN limit for T > T_{c}.
 Publication:

Journal of High Energy Physics
 Pub Date:
 September 2004
 DOI:
 10.1088/11266708/2004/09/028
 arXiv:
 arXiv:hepth/0407068
 Bibcode:
 2004JHEP...09..028D
 Keywords:

 1/N Expansion Lattice Gauge Field Theories QCD Lattice QCD;
 High Energy Physics  Lattice;
 High Energy Physics  Theory
 EPrint:
 9 pages, 2 figs, a few discussions added, JHEP in press