Low energy effective theory on a regularized brane in 6D gauged chiral supergravity

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dc.creatorArroja, Frederico
dc.creatorKobayashi, Tsutomu
dc.creatorKoyama, Kazuya
dc.creatorShiromizu, Tetsuya
dc.date2007-10-15
dc.date.accessioned2026-07-07T13:16:09Z
dc.date.available2026-07-07T13:16:09Z
dc.descriptionWe derive the low energy effective theory on a brane in six-dimensional chiral supergravity. The conical 3-brane singularities are resolved by introducing cylindrical codimension one 4-branes whose interiors are capped by a regular spacetime. The effective theory is described by the Brans-Dicke (BD) theory with the BD parameter given by $ω_{\rm BD}=1/2$. The BD field is originated from a modulus which is associated with the scaling symmetry of the system. If the dilaton potentials on the branes preserve the scaling symmetry, the scalar field has an exponential potential in the Einstein frame. We show that the time dependent solutions driven by the modulus in the four-dimensional effective theory can be lifted up to the six-dimensional exact solutions found in the literature. Based on the effective theory, we discuss a possible way to stabilize the modulus to recover standard cosmology and also study the implication for the cosmological constant problem.
dc.description12 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0710.2539
dc.identifierhttp://arxiv.org/abs/0710.2539
dc.identifierJCAP 0712:006,2007
dc.identifierdoi:10.1088/1475-7516/2007/12/006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/230698
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleLow energy effective theory on a regularized brane in 6D gauged chiral supergravity
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