Abstract
The usual formulations of quantum field theory in Minkowski spacetime make crucial use of Poincaré symmetry, positivity of total energy, and the existence of a unique, Poincaré invariant vacuum state. These and other key features of quantum field theory do not generalize straightforwardly to curved spacetime. We discuss the conceptual obstacles to formulating quantum field theory in curved spacetime and how they can be overcome.
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Acknowledgements
This research was supported in part by NSF grant PHY04-56619 to the University of Chicago.
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Wald, R.M. (2018). The Formulation of Quantum Field Theory in Curved Spacetime. In: Rowe, D., Sauer, T., Walter, S. (eds) Beyond Einstein. Einstein Studies, vol 14. Birkhäuser, New York, NY. https://doi.org/10.1007/978-1-4939-7708-6_15
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DOI: https://doi.org/10.1007/978-1-4939-7708-6_15
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