TY - JOUR

T1 - Branes on charged dilatonic backgrounds

T2 - Self-tuning, Lorentz violations and cosmology

AU - Grojean, Christophe

AU - Quevedo, Fernando

AU - Ivonne Zavala, C.

AU - Tasinato, Gianmassimo

PY - 2001

Y1 - 2001

N2 - We construct an n + q + 2 dimensional background that has dilatonic q-brane singularities and that is charged under an antisymmetric tensor field, the background spacetime being maximally symmetric in n-dimensions with constant curvature k = 0, ±1. For k = 1 the bulk solutions correspond to black q-branes. For k = 0, -1 the geometry resembles the 'white hole' region of the Reissner-Nördstrom solution with a past Cauchy horizon. The metric between the (timelike) singularity and the horizon is static whereas beyond the horizon it is cosmological. In the particular case of q = 0, we study the motion of a codimension one n-brane in these charged dilatonic backgrounds that interpolate between the original scalar self-tuning and the black hole geometry and provide a way to avoid the naked singularity problem and/or the need of having exotic matter on the brane. These backgrounds are asymmetrically warped and so break 4D Lorentz symmetry in a way that is safe for particle physics but may lead to faster than light propagation in the gravitational sector.

AB - We construct an n + q + 2 dimensional background that has dilatonic q-brane singularities and that is charged under an antisymmetric tensor field, the background spacetime being maximally symmetric in n-dimensions with constant curvature k = 0, ±1. For k = 1 the bulk solutions correspond to black q-branes. For k = 0, -1 the geometry resembles the 'white hole' region of the Reissner-Nördstrom solution with a past Cauchy horizon. The metric between the (timelike) singularity and the horizon is static whereas beyond the horizon it is cosmological. In the particular case of q = 0, we study the motion of a codimension one n-brane in these charged dilatonic backgrounds that interpolate between the original scalar self-tuning and the black hole geometry and provide a way to avoid the naked singularity problem and/or the need of having exotic matter on the brane. These backgrounds are asymmetrically warped and so break 4D Lorentz symmetry in a way that is safe for particle physics but may lead to faster than light propagation in the gravitational sector.

KW - Cosmology of Theories beyond the SM

KW - Extra Large Dimensions

KW - P-branes

UR - http://www.scopus.com/inward/record.url?scp=33745013703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745013703&partnerID=8YFLogxK

U2 - 10.1088/1126-6708/2001/08/005

DO - 10.1088/1126-6708/2001/08/005

M3 - Article

AN - SCOPUS:33745013703

SN - 1029-8479

VL - 5

SP - XV-28

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

ER -