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Four-dimensional Gravity from Singular Spaces

Brax, Philippe; van de Bruck, Carsten; Davis, Anne-Christine and Rhodes, Christophe. 2002. Four-dimensional Gravity from Singular Spaces. Phys. Rev. D, 65, p. 121501. ISSN 1550-2368 [Article]

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Abstract or Description

The modification to four-dimensional Einstein gravity at low energy in two brane models is investigated within supergravity in singular spaces. Using perturbation theory around a static BPS background, we study the effective four-dimensional gravitational theory, a scalar-tensor theory, and derive the Brans-Dicke parameter when matter is present on the positive tension brane only. We show there is an attractor mechanism towards general relativity in the matter dominated era. The dynamics of the interbrane distance are discussed. Finally, when matter lives on both branes, we find that there is a violation of the equivalence principle whose magnitude is governed by the warping of the extra dimension.

Item Type: Article

Identification Number (DOI):

10.1103/PhysRevD.65.121501

Related URLs:

Departments, Centres and Research Units:

Computing

Dates:

DateEvent
2002Published

Item ID:

2357

Date Deposited:

09 Mar 2014 17:25

Last Modified:

20 Jun 2017 11:52

URI: http://research.gold.ac.uk/id/eprint/2357

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