Asymmetrically Warped Spacetimes

Details Asymmetrically Warped Spacetimes Asymmetrically Warped Spacetimes

2001-10-30

arxiv.org/abs/hep-th/0110269v1

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, LaTeX, JHEP3.cls. To appear in the Proceedings of the EPS 2001 International Europhysics Conference on HEP, Budapest,

Scientific paper

We investigate spacetimes in which the speed of light along flat 4D sections varies over the extra dimensions due to different warp factors for the space and the time coordinates (``asymmetrically warped'' spacetimes). The main property of such spaces is that while the induced metric is flat, implying Lorentz invariant particle physics on a brane, bulk gravitational effects will cause apparent violations of Lorentz invariance and of causality from the brane observer's point of view. An important experimentally verifiable consequence of this is that gravitational waves may travel with a speed different from the speed of light on the brane, and possibly even faster. We find the most general spacetimes of this sort, which are given by certain types of black hole spacetimes characterized by the mass and the charge of the black hole. We show how to satisfy the junction conditions and analyze the properties of these space-times.

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