Thouless theorem for one and two degrees of freedom

We perform an accessible demonstration of Thouless theorem for systems of one and two degrees of freedom, using only elementary quantum mechanics. This theorem is specially useful to ¯nd the vacuum of a transformed set of bosonic operators. A further motivation comes from experiments involving few trapped ions or ¯elds in cavity quantum electrodynamics, usually modelled by few linearly interacting oscillators.

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Main Authors: Magalhães,A.R. Bosco de, Fonseca,C.H. d'Àvila, Nemes,M.C.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2006
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172006000200007
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spelling oai:scielo:S1806-111720060002000072006-10-16Thouless theorem for one and two degrees of freedomMagalhães,A.R. Bosco deFonseca,C.H. d'ÀvilaNemes,M.C. quantum oscillators variables transformations bosonic systems We perform an accessible demonstration of Thouless theorem for systems of one and two degrees of freedom, using only elementary quantum mechanics. This theorem is specially useful to ¯nd the vacuum of a transformed set of bosonic operators. A further motivation comes from experiments involving few trapped ions or ¯elds in cavity quantum electrodynamics, usually modelled by few linearly interacting oscillators.info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaRevista Brasileira de Ensino de Física v.28 n.2 20062006-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172006000200007en
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country Brasil
countrycode BR
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libraryname SciELO
language English
format Digital
author Magalhães,A.R. Bosco de
Fonseca,C.H. d'Àvila
Nemes,M.C.
spellingShingle Magalhães,A.R. Bosco de
Fonseca,C.H. d'Àvila
Nemes,M.C.
Thouless theorem for one and two degrees of freedom
author_facet Magalhães,A.R. Bosco de
Fonseca,C.H. d'Àvila
Nemes,M.C.
author_sort Magalhães,A.R. Bosco de
title Thouless theorem for one and two degrees of freedom
title_short Thouless theorem for one and two degrees of freedom
title_full Thouless theorem for one and two degrees of freedom
title_fullStr Thouless theorem for one and two degrees of freedom
title_full_unstemmed Thouless theorem for one and two degrees of freedom
title_sort thouless theorem for one and two degrees of freedom
description We perform an accessible demonstration of Thouless theorem for systems of one and two degrees of freedom, using only elementary quantum mechanics. This theorem is specially useful to ¯nd the vacuum of a transformed set of bosonic operators. A further motivation comes from experiments involving few trapped ions or ¯elds in cavity quantum electrodynamics, usually modelled by few linearly interacting oscillators.
publisher Sociedade Brasileira de Física
publishDate 2006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172006000200007
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