Some intricacies of the momentum operator in quantum mechanics

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Bibliographic Details
Main Author: Utpal Roy
Format: Artículo científico
Language:en
Published: Sociedad Mexicana de Física A.C. 2008
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author Utpal Roy
author_facet Utpal Roy
contents Some intricacies of the momentum operator in quantum mechanics Utpal Roy Suranjana Ghosh Kaushik Bhattacharya Física, Astronomía y Matemáticas Momentum operator quantum mechanics In quantum mechanics textbooks, the momentum operator is defined in Cartesian coordinates and the form of the momentum operator in spherical polar coordinates is rarely discussed. Consequently one always generalizes the Cartesian prescription to other coordinates and falls into a trap. In this work, we introduce the difficulties one faces when the question of the momentum operator in general curvilinear coordinates arises. We have tried to elucidate the points related to the definition of the momentum operator, taking spherical polar coordinates as our specimen coordinate system and proposing an elementary method in which we can ascertain the form of the momentum operator in general coordinate systems. 2008 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57028302014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.54
format Artículo científico
id redalyc_57028302014
institution Redalyc
language en
publishDate 2008
publisher Sociedad Mexicana de Física A.C.
spellingShingle Some intricacies of the momentum operator in quantum mechanics
Utpal Roy
Física, Astronomía y Matemáticas
Momentum operator
quantum mechanics
Some intricacies of the momentum operator in quantum mechanics Utpal Roy Suranjana Ghosh Kaushik Bhattacharya Física, Astronomía y Matemáticas Momentum operator quantum mechanics In quantum mechanics textbooks, the momentum operator is defined in Cartesian coordinates and the form of the momentum operator in spherical polar coordinates is rarely discussed. Consequently one always generalizes the Cartesian prescription to other coordinates and falls into a trap. In this work, we introduce the difficulties one faces when the question of the momentum operator in general curvilinear coordinates arises. We have tried to elucidate the points related to the definition of the momentum operator, taking spherical polar coordinates as our specimen coordinate system and proposing an elementary method in which we can ascertain the form of the momentum operator in general coordinate systems. 2008 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57028302014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.54
title Some intricacies of the momentum operator in quantum mechanics
topic Física, Astronomía y Matemáticas
Momentum operator
quantum mechanics
url https://www.redalyc.org/articulo.oa?id=57028302014