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Avoidance of Naked Singularities in Dilatonic Brane World Scenarios with a Gauss-Bonnet Term

Abstract : We consider, in 5 dimensions, the low energy effective action induced by heterotic string theory including the leading stringy correction of order alpha'. In the presence of a single positive tension flat brane, and an infinite extra dimension, we present a particular class of solutions with finite 4-dimensional Planck scale and no naked singularity. A ``self-tuning'' mechanism for relaxing the cosmological constant on the brane, without a drastic fine tuning of parameters, is discussed in this context. Our solutions are distinct from the standard self-tuning solutions discussed in the context of vanishing quantum corrections in alpha', and become singular in this limit.
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http://hal.in2p3.fr/in2p3-00084715
Contributor : Dominique Girod Connect in order to contact the contributor
Submitted on : Monday, July 10, 2006 - 12:05:32 PM
Last modification on : Sunday, June 26, 2022 - 11:45:59 AM

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P. Binetruy, C. Charmousis, S.C. Davis, J.-F. Dufaux. Avoidance of Naked Singularities in Dilatonic Brane World Scenarios with a Gauss-Bonnet Term. Physics Letters B, Elsevier, 2002, 544, pp.183-191. ⟨10.1016/S0370-2693(02)02477-2⟩. ⟨in2p3-00084715⟩

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