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Singularities in Hyperscaling Violating Spacetimes

Authors
  • Copsey, Keith
  • Mann, Robert
Type
Preprint
Publication Date
Oct 12, 2012
Submission Date
Oct 03, 2012
Identifiers
DOI: 10.1007/JHEP04(2013)079
Source
arXiv
License
Yellow
External links

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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