Non-singular radiation cosmological models
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In this paper we analyse the possibility of constructing singularity-free inhomogeneous cosmological models with a pure radiation field as matter content. It is shown that the conditions for regularity are very easy to implement and therefore there is a huge number of such spacetimes.
13 pages, LaTex, ws-mpla, to appear in Modern Physics Letters A
13 pages, LaTex, ws-mpla, to appear in Modern Physics Letters A