Branes on charged dilatonic backgrounds: Self-tuning, Lorentz violations and cosmology

Christophe Grojean, Fernando Quevedo, C. Ivonne Zavala, Gianmassimo Tasinato

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)XV-28
JournalJournal of High Energy Physics
Issue number8
StatePublished - 2001


  • Cosmology of Theories beyond the SM
  • Extra Large Dimensions
  • P-branes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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