✦ LIBER ✦

Unitary Transformations and the Action Principle

✍ Scribed by Julian Schwinger

Book ID: 123656557
Publisher: National Academy of Sciences
Year: 1960
Tongue: English
Weight: 378 KB
Volume: 46
Category: Article
ISSN: 0027-8424
DOI: 10.2307/70962

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## Abstract Unitary transformations of operators and variables are considered for those cases when a Hermitian operator in the expression **U** = exp (__i__**S**) explicitly depends on the projection operators. Some simple examples of such transformations are given and the equations obtained which