Phys. Rev. Lett. 103, 161601 (2009) [4 pages]Flat 3-brane with Tension in Cascading GravityReceived 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
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