Collinear photon emission from quark-gluon plasma: The light-cone path integral formulation
Abstract
A simple physical derivation of the photon emission rate from a weakly coupled quark-gluon plasma connected with the collinear processes q → γq and qbar q to γ is given. The analysis is based on the light-cone path integral approach to induced radiation. The results agree with those obtained by Arnold, Moore, and Yaffe (AMY) using the real-time thermal perturbation theory. It is demonstrated that the solution of the AMY integral equation is nothing but the time-integrated Green’s function of the light-cone 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:hep-ph/0612343
- Bibcode:
- 2007JETPL..85..149A
- Keywords:
-
- 12.38.-t;
- High Energy Physics - Phenomenology
- E-Print:
- 12 pages, 2 figures