Gravitational renormalization of quantum field theory: a "conservative" approach

TL;DR

This paper introduces a conservative, geometrically motivated approach to quantum field theory that addresses UV divergences non-perturbatively by modifying propagators based on gravitational effects.

Contribution

It proposes a novel framework where virtual particles are described by modified propagators influenced by Einstein's equations, integrating gravity into quantum field theory.

Findings

Provides a non-perturbative method to incorporate gravity into QFT

Suggests modified propagators for virtual particles based on spacetime geometry

Addresses UV divergences through gravitational effects

Abstract

We propose general guidelines in order to incorporate the geometrical description of gravity in quantum field theory and address the problem of UV divergences non-perturbatively. In our aproach, each virtual particle in a Feynman graph should be described by a modified propagator and move in the space-time generated by the other particles in the same graph according to Einstein's (semiclassical) equations.