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arXiv · 1210.1231

Singularities in Hyperscaling Violating Spacetimes

Keith Copsey·Robert Mann
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Abstract

We examine spacetimes which generalize Lifshitz scaling to allow hyperscaling violation invariance (i.e. a constant conformal transformation) for the types of singularities frequently found in the Lifshitz case. We find that most of these spacetimes suffer either from a traditional naked curvature singularity or a null curvature singularity robust against stringy higher derivative corrections. We do find a one-parameter family that evades these issues but this family requires exotic matter, in particular involving a negative energy density that may not be interpreted as due to a cosmological constant.

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Keith Copsey, Robert Mann. 2012-10-12. Singularities in Hyperscaling Violating Spacetimes. https://doi.org/10.1007/jhep04(2013)079

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