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Sentence #1588570

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Comments

 al_ex_an_der al_ex_an_der May 24, 2012 May 24, 2012 at 12:30:36 AM UTC flag Report link Permalink

Genau das habe ich auch gerade gedacht,... aber ich hätte es niemals so schön in Worte fassen können.

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License: CC BY 2.0 FR

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Eine quantenmechanische Observable heißt eine Konstante der Bewegung, wenn sie nicht explizit zeitabhängig und mit dem Hamiltonoperator vertauschbar ist. In der Tat ist der Erwartungswert einer solchen Observablen dann zeitlich konstant, in jedem Zustand.

added by Pfirsichbaeumchen, May 24, 2012
Eine quantenmechanische Observable heißt eine Konstante der Bewegung, wenn sie mit dem Hamiltonoperator vertauschbar und nicht explizit zeitabhängig ist. In der Tat ist der Erwartungswert einer solchen Observablen dann zeitlich konstant, in jedem Zustand.

edited by Pfirsichbaeumchen, May 24, 2012
➜ #1731342量子力学系の観測可能量は、ハミルトン演算子と可換で且つ直接には時刻に依存しない場合、運動の定数と呼ばれる。実際、その様な観測可能量の平均値はどの様な状態に於いても時間的に一定となるのである。

linked by Pfirsichbaeumchen, July 27, 2012
➜ #9160676On appelle une observable en mécanique quantique une constante de mouvement si elle est interchangeable avec l'opérateur de Hamilton et si elle ne dépend pas explicitement du temps. En effet, la valeur attendue d'une telle observable est alors constante dans le temps, dans n'importe quel état.

linked by Micsmithel, October 18, 2020