Correspondence principle in quantum gravity

Abstract

The problem of consistent formulation of the correspondence principle in quantum gravity is considered. The usual approach based on the use of two-particle scattering amplitudes is shown to be in disagreement with the classical result of General Relativity given by the Schwarzschild solution. It is shown also that this approach fails to describe whatever non-Newtonian interactions of macroscopic bodies. An alternative interpretation of the correspondence principle is given directly in terms of the effective action. Gauge independence of the ℏ 0 part of the one-loop radiative corrections to the gravitational form factors of the scalar particle is proved, justifying the interpretation proposed. The application to black holes is discussed.