Citation
P. Busch et J. Singh, LUDERS THEOREM FOR UNSHARP QUANTUM MEASUREMENTS, Physics letters. A, 249(1-2), 1998, pp. 10-12
Citations number
3
Categorie Soggetti
Physics
Journal title
ISSN journal
03759601
Volume
249
Issue
1-2
Year of publication
1998
Pages
10 - 12
Database
ISI
SICI code
0375-9601(1998)249:1-2<10:LTFUQM>2.0.ZU;2-Q
Abstract
A theorem of Luders states that an ideal measurement of a sharp discre
te observable does not alter the statistics of another sharp observabl
e if, and only if, the two observables commute. It will be shown that
this statement extends to certain pairs of unsharp observables. Implic
ations for local relativistic quantum theory will be discussed. (C) 19
98 Elsevier Science B.V.