Four principles for quantum gravity

TL;DR

This paper proposes four foundational principles for quantum gravity, demonstrating they lead to Einstein's equations and suggesting modifications to classical principles like MOND due to quantum effects.

Contribution

Introduces four core principles for quantum gravity that recover Einstein equations and relate to MOND modifications.

Findings

Four principles suffice to derive Einstein equations

MOND may result from quantum gravity modifications

Quantum effects can alter classical equivalence principles

Abstract

Four principles are proposed to underlie the quantum theory of gravity. We show that these suffice to recover the Einstein equations. We also suggest that MOND results from a modification of the classical equivalence principle, due to quantum gravity effects.