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arXiv · hep-th/0106019

Localization of Scalar Fluctuations in a Dilatonic Brane-World Scenario

V. Bozza·M. Gasperini·G. Veneziano
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Abstract

We derive and solve the full set of scalar perturbation equations for a class of $Z_2$-symmetric five-dimensional geometries generated by a bulk cosmological constant and by a 3-brane non-minimally coupled to a bulk dilaton field. The massless scalar modes, like their tensor analogues, are localized on the brane, and provide long-range four-dimensional dilatonic interactions, which are generically present even when matter on the brane carries no dilatonic charge. The shorter-range corrections induced by the continuum of massive scalar modes are always present: they persist even in the case of a trivial dilaton background (the standard Randall--Sundrum configuration) and vanishing dilatonic charges.

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V. Bozza, M. Gasperini, G. Veneziano. 2001-06-02. Localization of Scalar Fluctuations in a Dilatonic Brane-World Scenario. https://doi.org/10.1016/s0550-3213(01)00515-6

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