Robert M. Wald (Chicago) — July 31, 2009 – 8:45 Axiomatic Quantum Field Theory in Curved Spacetime

Content: Quantum field theory in curved spacetime (QFTCS) is a theory wherein matter is treated fully in accord with the principles of quantum field theory, but gravity is treated classically in accord with general relativity. It is not expected to be an exact theory of nature, but it should provide a good approximate description in circumstances where the quantum effects of gravity itself do not play a dominant role. Despite its classical treatment of gravity, QFTCS has provided us with some of the deepest insights we presently have into the nature of quantum gravity.

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