Physical Review

Uniqueness Property of the Twofold Vacuum Expectation Value

Paul G. Federbush, Kenneth A. Johnson

Published Dec 1, 1960• 113 citations

Abstract

It is shown under general assumptions that if the one-body Green's function equals its free-field value the theory is that of a free field.Received 14 June 1960DOI:https://doi.org/10.1103/PhysRev.120.1926©1960 American Physical Society

DOI: 10.1103/physrev.120.1926

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