Speaker
Bin Zhang
(Arkansas State University)
Description
The Quark-Gluon Plasma can be produced in high energy heavy ion collisions and how it equilibrates is important for the extraction of the properties of strongly interacting matter. A radiative transport model can be used to reveal interesting characteristics of Quark-Gluon Plasma thermalization. For example, screened parton interactions always lead to partial pressure isotropization. Systems with different initial pressure anisotropies evolve toward the same asymptotic evolution. In particular, radiative processes are crucial for the chemical equilibration of the system. Matrix elements under the soft and collinear approximation for these processes as first derived by Gunion and Bertsch are widely used. A different approach is to start with the exact matrix element for the 2<->3 processes as was first conjectured by Parke and Taylor. General features of this approach will be reviewed and the results will be compared with the Gunion-Bertsch results. We will comment on the possible implications of the exam matrix approach on Quark-Gluon Plasma thermalization.
Author
Bin Zhang
(Arkansas State University)
