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Phys. Rev. Lett. 103, 161601 (2009) [4 pages]

Flat 3-brane with Tension in Cascading Gravity

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Claudia de Rham1,2, Justin Khoury1,3, and Andrew Tolley1
1Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario, N2L 2Y5, Canada
2Department of Physics and Astronomy, McMaster University, Hamilton Ontario, L8S 4M1, Canada
3Center for Particle Cosmology, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6395, USA

Received 23 July 2009; published 15 October 2009

In the cascading gravity brane-world scenario, our 3-brane lies within a succession of lower-codimension branes, each with their own induced gravity term, embedded into each other in a higher-dimensional space-time. In the (6+1)-dimensional version of this scenario, we show that a 3-brane with tension remains flat, at least for sufficiently small tension that the weak-field approximation is valid. The bulk solution is singular nowhere and remains in the perturbative regime everywhere.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.161601
DOI:
10.1103/PhysRevLett.103.161601
PACS:
11.25.Wx, 95.36.+x, 98.80.Cq