Lower Limit to the Scale of an Effective Theory of Gravitation
Abstract
Description
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.
4 pages, 1 figures. V3: matches published version
4 pages, 1 figures. V3: matches published version