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arXiv · 2104.06442

Localizable Particles in the Classical Limit of Quantum Field Theory

Benjamin H. Feintzeig·Jonah Librande·Rory Soiffer
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Abstract

A number of arguments purport to show that quantum field theory cannot be given an interpretation in terms of localizable particles. We show, in light of such arguments, that the classical $\hbar\to 0$ limit can aid our understanding of the particle content of quantum field theories. In particular, we demonstrate that for the massive Klein-Gordon field, the classical limits of number operators can be understood to encode local information about particles in the corresponding classical field theory.

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Benjamin H. Feintzeig, Jonah Librande, Rory Soiffer. 2021-04-13. Localizable Particles in the Classical Limit of Quantum Field Theory. https://doi.org/10.1007/s10701-021-00458-5

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