Thermalization of anisotropic quark-gluon plasma produced by decays of   color flux tubes
  Kinetic equations are used to study thermalization of the anisotropic quark-gluon plasma produced by decays of color flux tubes possibly created at the very early stages of relativistic heavy-ion collisions. The decay rates of the initial color tubes are given by the Schwinger formula, while the collision terms are taken in the relaxation-time approximation. By connecting the relaxation time with viscosity we analyze production and thermalization processes in the plasma characterized by different values of the ratio of the shear viscosity to entropy density. 
Wojciech Florkowski and Radoslaw Ryblewski
hep-ph nucl-th