Electromagnetic radiation from hot and dense hadronic matter

The modifications of hadronic masses and decay widths at finite temperature and baryon density are investigated using a phenomenological model of hadr onic interactions in the Relativistic Hartree Approximation. We consider an exhaustive set of hadronic reactions and vector meson decays to estimate t he photon emission from hot and dense hadronic matter. The reduction in the vector meson masses and decay widths is seen to cause an enhancement in th e photon production, It is observed that the effect of p-decay width on pho ton spectra is negligible. The effects on dilepton production from pion ann ihilation are also indicated. (C) 1999 Elsevier Science B.V. All rights res erved.