Shear Viscosity of YangMills Theory in the Confinement Phase
Abstract
In terms of a simple holographic model, we study the absorption crosssection and the shear viscosity of a pure YangMills field at low temperature where the system is in the confinement phase. Then we expect that the glueball states are the dominant modes in this phase. In our holographic model, an infrared cutoff r_{m} is introduced as a parameter which fixes the lowest mass of the glueball. As a result, the critical temperature of gluon confinement is estimated to be T_{c} ~ 127 MeV. For T < T_{c}, we find that both the absorption crosssection and the shear viscosity are independent of the temperature. Their values are frozen at the values corresponding to the critical point, for 0 < T < T_{c}. We discuss this behavior by considering the glueball mass and its temperature dependence.
 Publication:

International Journal of Modern Physics D
 Pub Date:
 2007
 DOI:
 10.1142/S0218271807010766
 arXiv:
 arXiv:hepth/0608105
 Bibcode:
 2007IJMPD..16.1249B
 Keywords:

 Ads/CFT;
 hightemperature QCD;
 QCD shear viscosity;
 quarkgluon plasma;
 High Energy Physics  Theory;
 General Relativity and Quantum Cosmology
 EPrint:
 11 pages latex, 2 figures