Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier

We discuss the strange behavior at T = 0 of the phase-space Wigner distribution of the harmonic oscillator with the help of the purely quantal concepts of participation ratio of a mixed state and decoherence parameter. We also show that Wigner distribution-smoothing yields interesting insights, spec...

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Autores principales: Pennini, Flavia, Plastino, Ángel Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Física
Ciencias Exactas
Wigner distribution
classical-quantum frontier
temperature
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/137942
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-137942
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
Wigner distribution
classical-quantum frontier
temperature
spellingShingle Física
Ciencias Exactas
Wigner distribution
classical-quantum frontier
temperature
Pennini, Flavia
Plastino, Ángel Luis
Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
topic_facet Física
Ciencias Exactas
Wigner distribution
classical-quantum frontier
temperature
description We discuss the strange behavior at T = 0 of the phase-space Wigner distribution of the harmonic oscillator with the help of the purely quantal concepts of participation ratio of a mixed state and decoherence parameter. We also show that Wigner distribution-smoothing yields interesting insights, specially in the pathological instance in which the Wigner-Fano factor diverges. The associated decoherence parameter also sheds some light on temperature-dependence of the classical-quantum frontier.
format Articulo
Articulo
author Pennini, Flavia
Plastino, Ángel Luis
author_facet Pennini, Flavia
Plastino, Ángel Luis
author_sort Pennini, Flavia
title Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
title_short Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
title_full Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
title_fullStr Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
title_full_unstemmed Smoothed Wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
title_sort smoothed wigner-distributions, decoherence, and the temperature-dependence of the classical-quantum frontier
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/137942
work_keys_str_mv AT penniniflavia smoothedwignerdistributionsdecoherenceandthetemperaturedependenceoftheclassicalquantumfrontier
AT plastinoangelluis smoothedwignerdistributionsdecoherenceandthetemperaturedependenceoftheclassicalquantumfrontier
bdutipo_str Repositorios
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