UV caps, IR modification of gravity, and recovery of 4D gravity in regularized braneworlds

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dc.creatorKobayashi, Tsutomu
dc.date2008-06-05
dc.date2008-10-02
dc.date.accessioned2026-07-07T12:44:37Z
dc.date.available2026-07-07T12:44:37Z
dc.descriptionIn the context of six-dimensional conical braneworlds we consider a simple and explicit model that incorporates long distance modification of gravity and regularization of codimension-2 singularities. To resolve the conical singularities we replace the codimension-2 branes with ring-like codimension-1 branes, filling in the interiors with regular caps. The six-dimensional Planck scale in the cap is assumed to be much greater than the bulk Planck scale, which gives rise to the effect analogous to brane-induced gravity. Weak gravity on the regularized brane is studied in the case of a sharp conical bulk. We show by a linear analysis that gravity at short distances is effectively described by the four-dimensional Brans-Dicke theory, while the higher dimensional nature of gravity emerges at long distances. The linear analysis breaks down at some intermediate scale, below which four-dimensional Einstein gravity is shown to be recovered thanks to the second-order effects of the brane bending.
dc.description11 pages, 1 figure; v2: minor updates
dc.identifierhttps://arxiv.org/abs/0806.0924
dc.identifierhttp://arxiv.org/abs/0806.0924
dc.identifierPhys.Rev.D78:084018,2008
dc.identifierdoi:10.1103/PhysRevD.78.084018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220831
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleUV caps, IR modification of gravity, and recovery of 4D gravity in regularized braneworlds
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