Скачать или смотреть Classical Quantum General Relativity by Jonathan Oppenheim

Title: Classical Quantum General Relativity
Presenter: Jonathan Oppenheim, Department of Physics and Astronomy, University College London, London, United Kingdom
Conference: Koopman Methods in Classical and Classical-Quantum Mechanics
Sponsored by: Wilhelm und Else Heraeus-Stiftung and Tulane University
Conference Website Link: https://bit.ly/2Vchwri

I will give an overview of a theory of classical general relativity coupled to quantum field theory. The dynamics is linear, completely positive and trace preserving and doesn't suffer from the pathologies of semi-classical gravity. It reduces to Einstein's equations in the appropriate limit. The theory can be regarded as an effective theory describing the backreaction of quantum fields on space-time, or as fundamental. There is a discrete and continuous version, each with a modified constraint algebra. We introduce general theorems which severely constrain any hybrid classical quantum coupling, and which allow the quantum nature of gravity to be tested experimentally.