How to approach Quantum Gravity - Background independence in 1+1 dimensions

TL;DR

This paper discusses how background independence in quantum gravity can be achieved in 2D dilaton models using standard quantum field theory, addressing key conceptual and technical challenges.

Contribution

It demonstrates that a background independent quantum gravity theory is attainable in 2D dilaton models without additional assumptions beyond standard quantum field theory.

Findings

Background independence achievable in 2D dilaton quantum gravity

No extra assumptions beyond standard quantum field theory needed

Addresses conceptual and technical issues in quantum gravity

Abstract

The application of quantum theory to gravity is beset with many technical and conceptual problems. After a short tour d'horizon of recent attempts to master those problems by the introduction of new approaches, we show that the aim, a background independent quantum theory of gravity, can be reached in a particular area, 2d dilaton quantum gravity, without any assumptions beyond standard quantum field theory.