Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone Path Integral Formulation

Details Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone Path Integral Formulation Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone Path Integral Formulation

2006-12-27

arxiv.org/abs/hep-ph/0612343v1

JETPLett.85:149-155,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 2 figures

Scientific paper

10.1134/S0021364007030046

We give a simple physical derivation of the photon emission rate from the weakly coupled quark-gluon plasma connected with the collinear processes $q\to \gamma q$ and $q\bar{q}\to \gamma$. The analysis is based on the light-cone path integral approach to the induced radiation. Our results agree with that by Arnold, Moore and Yaffe obtained 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.

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