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Stability analysis of the Randall-Sundrum braneworld in presence of bulk scalar

Debaprasad Maity·Soumitra SenGupta·Sourav Sur
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Abstract

The stability problem of Randall-Sundrum braneworld is readdressed in the light of stabilizing bulk scalar fields. It is shown that in such scenario the instability persists because of back-reaction even when an arbitrary potential is introduced for a canonical scalar field in the bulk. It is further shown that a bulk scalar field can indeed stabilize the braneworld when it has a tachyon-like action. The full back-reacted metric in such model is derived and a proper resolution of the hierarchy problem (for which the Randall Sundrum scenario was originally proposed) is found to exist by suitable adjustments of the parameters of the scalar potential.

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Debaprasad Maity, Soumitra SenGupta, Sourav Sur. 2006-04-26. Stability analysis of the Randall-Sundrum braneworld in presence of bulk scalar. https://doi.org/10.1016/j.physletb.2006.11.014

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