2022-04-30   21916

Local Observables in Quantum Field Theory

Quantum field theory (QFT) is the foundation for our current understanding of almost everything in nature except gravity. QFT builds on the general principles of quantum theory (article 03431) by adding the concept of a local observable – an observable associated with a bounded region of spacetime. This article introduces some of the general principles of QFT, expressed in terms of local observables.

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www.cphysics.org updated 2022-09-25