Universe, Volume 3, Issue 1 (March 2017) – 27 articles
Cover Story (view full-size image): The Ambient Universe is the conformal infinity of an ambient metric for the 5-dimensional Einstein equations with fluid sources. The existence of spacetime singularities in four dimensions is constrained by asymptotic properties of the ambient 5-metric, while the non-degeneracy of the latter crucially depends on cosmic censorship holding on the boundary. The basic asymptotic condition shown on the cover issue page was discovered by I. Antoniadis and S. Cotsakis. The whole field of branes and singularities is reviewed in The Singularity Problem in Brane Cosmology, https://www.mdpi.com/2218-1997/3/1/15. The cover photo was taken by Diana Robinson. The asymptotic condition superimposed on the photo was done by the authors.
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