Einstein gravity on the codimension 2 brane?
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Publication:2837623
DOI10.1103/PHYSREVLETT.92.221601zbMATH Open1267.83095arXivhep-th/0311074OpenAlexW2080389059WikidataQ51994495 ScholiaQ51994495MaRDI QIDQ2837623
Author name not available (Why is that?)
Publication date: 11 July 2013
Published in: (Search for Journal in Brave)
Abstract: We look at general braneworlds in six-dimensional Einstein-Gauss-Bonnet gravity. We find the general matching conditions for the Einstein-Gauss-Bonnet braneworld, which remarkably turn out to give precisely the four-dimensional Einstein equations for the induced metric and matter on the brane, even when the extra dimensions are non-compact and have infinite volume. We also show that relaxing regularity of the curvature in the vicinity of the brane, or alternatively having a finite width brane, gives rise to an additional possible correction to the Einstein equations, which contains information on the brane's embedding in the bulk and cannot be determined from knowledge of the braneworld alone. We comment on the advantages and disadvantages of each possibility, and the relevance of these results regarding a possible solution of the cosmological constant problem.
Full work available at URL: https://arxiv.org/abs/hep-th/0311074
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