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arXiv · hep-th/0702010

Gravitating defects of codimension-two

Georgios Kofinas·Theodore Tomaras
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Abstract

Thin gravitating defects with conical singularities in higher codimensions and with generalized Israel matching conditions are known to be inconsistent for generic energy-momentum. A way to remove this inconsistency is proposed and is realized for an axially symmetric gravitating codimension-two defect in six dimensional Einstein gravity. By varying with respect to the brane embedding fields, alternative matching conditions are derived, which are generalizations of the Nambu-Goto equations of motion of the defect, consistent with bulk gravity. For a maximally symmetric defect the standard picture is recovered. The four-dimensional perfect fluid cosmology coincides with conventional FRW in the case of radiation, but for dust it has rho^{4/3} instead of rho. A four-dimensional black hole solution is presented having the Schwarzschild form with a short-distance correction r^{-2}.

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Georgios Kofinas, Theodore Tomaras. 2007-10-24. Gravitating defects of codimension-two. https://doi.org/10.1088/0264-9381%2F24%2F23%2F009

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