Smoothing out Negative Tension Brane

Details Smoothing out Negative Tension Brane Smoothing out Negative Tension Brane

2008-11-21

arxiv.org/abs/0811.3459v3

Phys.Lett.B675:455-459,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures (v1); References added (v2); Footnote 7 and a reference added, version to appear in Physics Letters B (v3)

Scientific paper

10.1016/j.physletb.2009.04.048

We propose an extension of the five dimensional gravitational action with an external source in order to allow arbitrary smoothing of the negative tension brane in the Randall-Sundrum model. This extended action can be derived from a model with an auxiliary four form field coupled to the gravity. We point out a further generalization of our model in relation to tachyon condensation. A possible mechanism for radion stabilization in our model is also discussed.

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