The Foldy–Wouthuysen transformation

DOI10.1119/1.18017zbMATH Open1219.81143arXivhep-ph/9503416OpenAlexW3104344422WikidataQ64005214 ScholiaQ64005214MaRDI QIDQ3088827

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Publication date: 19 August 2011

Published in: (Search for Journal in Brave)

Abstract: The Foldy-Wouthuysen transformation of the Dirac Hamiltonian is generally taught as simply a mathematical trick that allows one to obtain a two-component theory in the low-energy limit. It is not often emphasized that the transformed representation is the only one in which one can take a meaningful *classical limit*, in terms of particles and antiparticles. We briefly review the history and physics of this transformation.

Full work available at URL: https://arxiv.org/abs/hep-ph/9503416

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