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arxiv: 0906.1734 · v1 · submitted 2009-06-09 · ✦ hep-ph · nucl-th

Finite lifetime effects on the photon production from a quark-gluon plasma

classification ✦ hep-ph nucl-th
keywords photoneffectsfinitelifetimeplasmaquark-gluonansatzcontribution
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We use the real-time Keldysh formalism to investigate finite lifetime effects on the photon emission from a quark-gluon plasma (QGP). We provide an ansatz which eliminates the divergent contribution from the vacuum polarization and renders the photon spectrum UV-finite if the time evolution of the QGP is described in a suitable manner.

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