EPFL Lectures on General Relativity as a Quantum Field Theory · HackerPapers discussions

EPFL Lectures on General Relativity as a Quantum Field Theory — mentioned by raattgift

Tue, 11 Jul 2023 07:37:07 GMT

And now for something not completely different: an introductory lecture in Perturbative Quantum Gravity (PQG) by Prof. John Donoghue. The lecture is one in the Basics of Quantum Gravity online school sponsored by https://isqg.org/ the International Society for Quantum Gravity. PQG stands in contrast to the approach in the fine article at the top ("TFA") and to semiclassical gravity. By coincidence a retweet this morning re-surfaced a tweet from a couple of weeks ago by @BahramShakerin linking to these three 2023 lectures in Perturbative Quantum Gravity given a few weeks ago at École…

Paper and discussion history. A mention is not an endorsement.

EPFL Lectures on General Relativity as a Quantum Field Theory — mentioned by codethief

Tue, 25 Apr 2023 18:32:46 GMT

> If gravity wasn't self interacting it wouldn't follow the shortest path that gravity itself creates. I don't know if this is the right way to think about this. Gravity follows all paths. In a sense, it is the path. Or, as Hawking described it[0]: > [Gravity] shapes the arena in which it acts, unlike other fields which act in a fixed spacetime background. Back to your comment: > So gravity is almost certainly self interacting. I'm confused by the "almost certainly". I think this has long been established[1], but for entirely different reasons: The Einstein field equations are highly…

Paper and discussion history. A mention is not an endorsement.