Big-Bang Cosmology with Photon Creation

Abstract

The temperature evolution law is determined for an expanding FRW type Universe with a mixture of matter and radiation where "adiabatic" creation of photons has taken place. Taking into account this photon creation we discuss the physical conditions for having a hot big bang Universe. We also compare our results to the ones obtained from the standard FRW model.

9 pages, no figures, LaTex (RevTex). Minor corrections on the cover page and references

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