Transient photon production in a QGP

Eduardo S. Fraga (1) , François Gelis (2) , Dominique Schiff (3)

1 Instituto de Física
2 SPhT - Service de Physique Théorique
3 LPT - Laboratoire de Physique Théorique d'Orsay [Orsay]

We discuss the shortcomings of a formula that has been used in the literature to compute the number of photons emitted by a hot or dense system during a finite time, and show that the transient effects it predicts for the photon rate are unphysical.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]; Physique Nucléaire Théorique [nucl-th]

Eduardo S. Fraga, François Gelis, Dominique Schiff. Transient photon production in a QGP. RANP 2004, 2004, Angra dos Reis, Brazil. pp.437. ⟨hal-00287801⟩