Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-07-07
Phys.Rev. D72 (2005) 084024
Physics
High Energy Physics
High Energy Physics - Theory
23 pages, 2 figures, repetitions removed, PRD version
Scientific paper
10.1103/PhysRevD.72.084024
The metric of a Schwarzschild solution in brane induced gravity in five dimensions is studied. We find a nonperturbative solution for which an exact expression on the brane is obtained. We also find a linearized solution in the bulk and argue that a nonsingular exact solution in the entire space should exist. The exact solution on the brane is highly nontrivial as it interpolates between different distance scales. This part of the metric is enough to deduce an important property -- the ADM mass of the solution is suppressed compared to the bare mass of a static source. This screening of the mass is due to nonlinear interactions which give rise to a nonzero curvature outside the source. The curvature extends away from the source to a certain macroscopic distance that coincides with the would-be strong interaction scale. The very same curvature shields the source from strong coupling effects. The four dimensional law of gravity, including the correct tensorial structure, is recovered at observable distances. We find that the solution has no vDVZ discontinuity and show that the gravitational field on the brane is always weak, in spite of the fact that the solution is nonperturbative.
Gabadadze Gregory
Iglesias Alberto
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