Lower Limit to the Scale of an Effective Theory of Gravitation

Details Lower Limit to the Scale of an Effective Theory of Gravitation Lower Limit to the Scale of an Effective Theory of Gravitation

2006-06-06

arxiv.org/abs/astro-ph/0606133v3

Phys.Rev.Lett.100:031301,2008

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figures. V3: matches published version

Scientific paper

10.1103/PhysRevLett.100.031301

We consider a linearized, effective quantum theory of gravitation in which gravity weakens at energies higher than ~10^-3 eV in order to accommodate the apparent smallness of the cosmological constant. Such a theory predicts departures from the static Newtonian inverse-square force law on distances below ~0.05 mm. However, we show that such a modification also leads to changes in the long-range behavior of gravity and is inconsistent with observed gravitational lenses.

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