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Interpreting the conformal cousin of the Husain-Martinez-Nunez solution

A 2-parameter inhomogeneous cosmology in Brans-Dicke theory, obtained by conformally transforming the Husain-Martinez-Nunez (HMN) scalar field solution of the Einstein equations is studied and interpreted physically. According to the values of the parameters it describes a wormhole, a naked singularity, or else a spacetime containing apparent black hole horizons which appear/disappear in pairs (as well as a cosmological horizon) as in the original HMN metric. The reasons why there isn't a one-to-one correspondence between conformal copies of this metric are discussed.

preprint2012arXivOpen access
Valerio FaraoniAndres F. Zambrano Moreno
gr-qc
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Valerio FaraoniAndres F. Zambrano Moreno

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