Gravitational Radiation in Quantum Gravity

TL;DR

This paper calculates the first quantum gravitational correction to classical gravitational radiation from binary systems, revealing non-local effects predicted by effective field theory of quantum gravity.

Contribution

It introduces the first calculation of quantum gravitational corrections to the classical quadrupole radiation formula at second order in Newton's constant.

Findings

Quantum corrections modify classical gravitational wave emission.

Non-local effects arise from low-energy graviton propagation.

Results provide insights into quantum aspects of gravitational radiation.

Abstract

The effective field theory of quantum gravity generically predicts non-locality to be present in the effective action, which results from the low-energy propagation of gravitons and massless matter. Working to second order in gravitational curvature, we reconsider the effects of quantum gravity on the gravitational radiation emitted from a binary system. In particular, we calculate for the first time the leading order quantum gravitational correction to the classical quadrupole radiation formula which appears at second order in Newton's constant.