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Lower Limit to the Scale of an Effective Theory of Gravitation

R. R. Caldwell·Daniel Grin
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Abstract

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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R. R. Caldwell, Daniel Grin. 2008-02-26. Lower Limit to the Scale of an Effective Theory of Gravitation. https://doi.org/10.1103/physrevlett.100.031301

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