Superselection Rules
Quantum Physics
2009-05-13 v2
Abstract
This note provides a summary of the meaning of the term `Superselection Rule' in Quantum Mechanics and Quantum-Field Theory. It is a slightly extended version of a contribution to the Compendium of Quantum Physics: Concepts, Experiments, History and Philosophy, edited by Friedel Weinert, Klaus Hentschel, Daniel Greenberger, and Brigitte Falkenburg.
Cite
@article{arxiv.0710.1516,
title = {Superselection Rules},
author = {Domenico Giulini},
journal= {arXiv preprint arXiv:0710.1516},
year = {2009}
}
Comments
10 pages, no figures. Two easy-to-read proofs of statements made in the text are added in the second version, with slight adaptations in notation