Collinear photon emission from quarkgluon plasma: The lightcone path integral formulation
Abstract
A simple physical derivation of the photon emission rate from a weakly coupled quarkgluon plasma connected with the collinear processes q → γq and qbar q to γ is given. The analysis is based on the lightcone path integral approach to induced radiation. The results agree with those obtained by Arnold, Moore, and Yaffe (AMY) using the realtime thermal perturbation theory. It is demonstrated that the solution of the AMY integral equation is nothing but the timeintegrated Green’s function of the lightcone path integral approach written in the momentum representation.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 April 2007
 DOI:
 10.1134/S0021364007030046
 arXiv:
 arXiv:hepph/0612343
 Bibcode:
 2007JETPL..85..149A
 Keywords:

 12.38.t;
 High Energy Physics  Phenomenology
 EPrint:
 12 pages, 2 figures