title: Lower limit to the scale of an effective quantum theory of gravitation.
abstract: An effective quantum theory of gravitation in which gravity weakens at energies higher than approximately 10(-3) eV is one way to accommodate the apparent smallness of the cosmological constant. Such a theory predicts departures from the Newtonian inverse-square force law on distances below approximately 0.05 mm. However, it is shown that this modification also leads to changes in the long-range behavior of gravity and is inconsistent with observed gravitational lenses.
authors.affiliation: Department of Physics & Astronomy, Dartmouth College, Hanover, NH 03755, USA.
authors.forename: R R
authors.initials: RR
authors.lastname: Caldwell
authors.forename: Daniel
authors.initials: D
authors.lastname: Grin