Unified Brane Gravity: Cosmological Dark Matter from Scale Dependent Newton Constant

Details Unified Brane Gravity: Cosmological Dark Matter from Scale Dependent Newton Constant Unified Brane Gravity: Cosmological Dark Matter from Scale Dependent Newton Constant

2009-07-21

arxiv.org/abs/0907.3565v1

Phys.Rev.D80:024039,2009

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.80.024039

We analyze, within the framework of unified brane gravity, the weak-field perturbations caused by the presence of matter on a 3-brane. Although deviating from the Randall-Sundrum approach, the masslessness of the graviton is still preserved. In particular, the four-dimensional Newton force law is recovered, but serendipitously, the corresponding Newton constant is shown to be necessarily lower than the one which governs FRW cosmology. This has the potential to puzzle out cosmological dark matter. A subsequent conjecture concerning galactic dark matter follows.

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