Luders theorem for unsharp quantum measurements

被引：62

作者：

Busch, P ^{[1
]}

Singh, J ^{[1
]}

机构：

[1] Univ Hull, Dept Math, Hull HU6 7RX, N Humberside, England

来源：

PHYSICS LETTERS A | 1998年 / 249卷 / 1-2期

关键词：

D O I：

10.1016/S0375-9601(98)00704-X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A theorem of Luders states that an ideal measurement of a sharp discrete observable does not alter the statistics of another sharp observable if, and only if, the two observables commute. It will be shown that this statement extends to certain pairs of unsharp observables. Implications for local relativistic quantum theory will be discussed. (C) 1998 Elsevier Science B.V.

引用

页码：10 / 12

页数：3