Phase-space description of quantum rotations

We propose a Wigner transformation of the density matrix and operators of a system with bounded coordinates and discrete momentum spectra (typically, a particle in a box) and prove that all requirements for such a transformation are satisfied. The phase-space mapping adopted here is employed to comp...

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Detalles Bibliográficos
Autores principales: Gatica, S.M., Hernandez, E.S.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10502947_v43_n9_p4594_Gatica
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_10502947_v43_n9_p4594_Gatica
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spelling todo:paper_10502947_v43_n9_p4594_Gatica2023-10-03T15:58:53Z Phase-space description of quantum rotations Gatica, S.M. Hernandez, E.S. We propose a Wigner transformation of the density matrix and operators of a system with bounded coordinates and discrete momentum spectra (typically, a particle in a box) and prove that all requirements for such a transformation are satisfied. The phase-space mapping adopted here is employed to compute the quasiprobability distributions associated with the pure states of a quantum rotator and the image of the angular momentum operator. The mapping of the dynamics of these objects, both in the reversible and irreversible frame, is constructed as well, and the conditions for the existence of a classical limit in the form of a Fokker-Planck equation of motion are investigated. © 1991 The American Physical Society. Fil:Gatica, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hernandez, E.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10502947_v43_n9_p4594_Gatica
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We propose a Wigner transformation of the density matrix and operators of a system with bounded coordinates and discrete momentum spectra (typically, a particle in a box) and prove that all requirements for such a transformation are satisfied. The phase-space mapping adopted here is employed to compute the quasiprobability distributions associated with the pure states of a quantum rotator and the image of the angular momentum operator. The mapping of the dynamics of these objects, both in the reversible and irreversible frame, is constructed as well, and the conditions for the existence of a classical limit in the form of a Fokker-Planck equation of motion are investigated. © 1991 The American Physical Society.
format JOUR
author Gatica, S.M.
Hernandez, E.S.
spellingShingle Gatica, S.M.
Hernandez, E.S.
Phase-space description of quantum rotations
author_facet Gatica, S.M.
Hernandez, E.S.
author_sort Gatica, S.M.
title Phase-space description of quantum rotations
title_short Phase-space description of quantum rotations
title_full Phase-space description of quantum rotations
title_fullStr Phase-space description of quantum rotations
title_full_unstemmed Phase-space description of quantum rotations
title_sort phase-space description of quantum rotations
url http://hdl.handle.net/20.500.12110/paper_10502947_v43_n9_p4594_Gatica
work_keys_str_mv AT gaticasm phasespacedescriptionofquantumrotations
AT hernandezes phasespacedescriptionofquantumrotations
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