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arXiv · 1308.3413

Friedmann-Robertson-Walker like cosmologies with spherical symmetry

Mauricio Cataldo·Fernanda Arostica·Sebastian Bahamonde
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Abstract

We reconsider the cosmological model discussed by Sung-Won Kim [Phys. Rev D 53, 6889 (1996)] in the context of Friedmann-Robertson-Walker cosmologies with a traversable wormhole, where it is assumed that the matter content is divided into two parts: the cosmic part that depends on time only and the wormhole part that depends on space only. The cosmic part obeys the barotropic equation of state $p_c=γρ_c$. The complete analysis requires further care and reveals more interesting results than what was previously shown by the author. They can be readily applied to the evolution of a large class of cosmological models which are more general than FRW models.

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Mauricio Cataldo, Fernanda Arostica, Sebastian Bahamonde. 2013-08-15. Friedmann-Robertson-Walker like cosmologies with spherical symmetry. https://doi.org/10.1103/physrevd.88.047502

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