The Ultraviolet Behavior Of Quantum Gravity

Understand

A theory of quantum gravity has been recently proposed by means of a novel quantization prescription, which is able to turn the poles of the free propagators that are due to the higher derivatives into fakeons.

• The classical Lagrangian contains the cosmological term, the Hilbert term, $\sqrt{-g}R_{\mu \nu }R^{\mu \nu }$ and $\sqrt{-g}R^{2}$.
• In this paper, we compute the one-loop renormalization of the theory and the absorptive part of the graviton self energy.
• The results illustrate the mechanism that makes renormalizability compatible with unitarity.