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Oxford Quantum Talks Archive

The causaloid approach to quantum theory and quantum gravity

Lucien Hardy, Perimeter Institute
Logic, Physics and Quantum Information Theory, March 2008, Bellairs Research Centre

Quantum theory is probabilistic but has fixed causal structure. General relativity is deterministic but has non-fixed causal structure. It seems that a theory of quantum gravity will inherit the radical features of these two less fundamental theories. Thus, we expect it to be probabilistic and have non-fixed causal structure. In this talk I present a framework, the causaloid formalism, for such theories.

[video] [streaming video]