Gravity on a Brane in Infinite-Volume Extra Space

Details Gravity on a Brane in Infinite-Volume Extra Space Gravity on a Brane in Infinite-Volume Extra Space

2000-08-06

arxiv.org/abs/hep-th/0008054v3

Phys.Rev. D63 (2001) 065007

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, 1 ps fig.; v2: references and comments added; v3: minor corrections, matches Phys. Rev. D version

Scientific paper

10.1103/PhysRevD.63.065007

We generalize the mechanism proposed in [hep-th/0005016] and show that a four-dimensional relativistic tensor theory of gravitation can be obtained on a delta-function brane in flat infinite-volume extra space. In particular, we demonstrate that the induced Ricci scalar gives rise to Einstein's gravity on a delta-function type brane if the number of space-time dimensions is bigger than five. The bulk space exhibits the phenomenon of infrared transparency. That is to say, the bulk can be probed by gravitons with vanishing four-dimensional momentum square, while it is unaccessible to higher modes. This provides an attractive framework for solving the cosmological constant problem.

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