Unification of General Relativity and the Standard Model via Quantum Gravity

Establish a self-consistent theory of quantum gravity that unifies General Relativity with the Standard Model of particle physics.

Background

The paper motivates searches for Lorentz-violating effects in strong gravity by noting that quantum gravity may leave observable low-energy imprints. As context, it highlights that a fundamental theoretical unification of gravity with the Standard Model is still lacking.

Against this backdrop, the authors study signatures of Lorentz symmetry breaking in a rotating bumblebee black hole spacetime, proposing potential observational probes, but emphasize that the broader unification problem remains open.

References

Nevertheless, constructing a self-consistent theory of quantum gravity that unifies GR with the Standard Model of particle physics remains one of the most profound open problems in fundamental physics .

— Probing Lorentz-violating effects via precession and accretion disk images of a rotating bumblebee black hole  (2604.00570 - Ou et al., 1 Apr 2026) in Introduction

Building on this picture, several directions remain open. An obvious one is to construct a minimal unification scheme that unifies Einstein Gravity with internal interactions.

— Conformal and Noncommutative Gravity from Gauge Symmetry Breaking and SO(2,16) Unification  (2608.23220 - Stefas et al., 24 Aug 2026) in Section 6, paragraph beginning “Building on this picture”