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- Title
Warped Brane-World Compactification with Gauss–Bonnet Term.
- Authors
Cho, Y. M.; Neupane, I. P.
- Abstract
In the Randall--Sundrum (RS) brane-world model a singular delta-function source is matched by the second derivative of the warp factor. So one should take possible curvature corrections in the effective action of the RS models in the Gauss--Bonnet (GB) form. We present a linearized treatment of gravity in the RS brane-world with the Gauss--Bonnet modifications to Einstein gravity. We give explicit expressions for the Neumann propagator in arbitrary D dimensions and show that a bulk GB term gives, along with a tower of Kaluza--Klein modes in the bulk, a massless graviton on the brane, as in the standard RS model. Moreover, a nontrivial GB coupling can allow a new branch of solutions with finite Planck scale and no naked bulk singularity, which might be useful to avoid some of the previously known "no-go theorems" for RS brane-world compactifications.
- Subjects
GRAVITY; GAUSS-Bonnet theorem; SUPERSTRING theories; COMPACTIFICATION (Physics); METAPHYSICAL cosmology
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2003, Vol 18, Issue 15, p2703
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X03015106