Hawking on Euclidean quantum gravity for nonperturbative physics

[CarlB]

Stephen Hawking's latest preprint on Arxiv uses "Euclidean Quantum Gravity". In fact, he says:

"I adopt the Euclidean approach [5], the only sane way to do quantum gravity nonperturbatively."
http://www.arxiv.org/abs/hep-th/0507171

Any comments?

Carl

 

[yourdadonapogostick]

doesn't gr say that spacetime is non-euclidean?

 

[HallsofIvy]

Yes, that's the whole point. The quantum theory treatment of gravity (or the electro-magnetic force) is inconsistent with general relativity.