The radion in brane cosmology

Details The radion in brane cosmology The radion in brane cosmology

2001-01-31

arxiv.org/abs/hep-th/0101234v2

Nucl.Phys.B615:219-236,2001

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 4 figures; two figures completed and some comments added in section 7.2; a small section 7.3 added on Randall-Sundru

Scientific paper

10.1016/S0550-3213(01)00426-6

We consider the homogeneous cosmological radion, which we define as the interbrane distance in a two brane and $Z_2$ symmetrical configuration. In a coordinate system where one of the brane is at rest, the junction conditions for the second (moving) brane give directly the (non-linear) equations of motion for the radion. We analyse the radion fluctuations and solve the non-linear dynamics in some simple cases of interest.

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