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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Complete set of commuting observables ： ウィキペディア英語版 Complete set of commuting observables In quantum mechanics, a complete set of commuting observables (CSCO) is a set of commuting operators whose eigenvalues completely specify the state of a system. Since each pair of observables in the set commutes, the observables are all compatible so that the measurement of one observable has no effect on the result of measuring another observable in the set. It is therefore not necessary to specify the order in which the different observables are measured. Measurement of the complete set of observables constitutes a complete measurement, in the sense that it projects the quantum state of the system onto a unique and known vector in the basis defined by the set of operators. That is, to prepare the completely specified state, we have to take any state arbitrarily, and then perform a succession of measurements corresponding to all the observables in the set, until it becomes a uniquely specified vector in the Hilbert space. ==The Compatibility Theorem== Let us have two observables, $A$ and $B$, represented by $\backslash hat$ and $\backslash hat$. Then any one of the following statements implies the other two: #$A$ and $B$ are compatible observables. #$\backslash hat$ and $\backslash hat$ have a common eigenbasis. #The operators $\backslash hat$ and $\backslash hat$ are commuting, that is, $(\backslash hat)\; =\; 0$. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Complete set of commuting observables」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.