Contribution of adiabatic phases to noncyclic evolution
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200009 |
Resumo: | We show that the difference of adiabatic phases, that are basis-dependent, in noncyclic evolution of non-degenerate quantum systems have to be taken into account to give the correct interference result in the calculation of physical quantities in states that are a superposition of instantaneous eigenstates of energy. To verify the contribution of those adiabatic phases in the interference phenomena, we consider the spin-1/2 model coupled to a precessing external magnetic field. In the model, the adiabatic phase increases in time up to reach the difference of the Berry's phases of the model when the external magnetic field completes a period. |
id |
SBF-2_930961f3d99db039966ecd9e68aae124 |
---|---|
oai_identifier_str |
oai:scielo:S0103-97332010000200009 |
network_acronym_str |
SBF-2 |
network_name_str |
Brazilian Journal of Physics |
repository_id_str |
|
spelling |
Contribution of adiabatic phases to noncyclic evolutionBerry's phaseadiabatic phasenoncyclic adiabatic evolutionspin-1/2 modelWe show that the difference of adiabatic phases, that are basis-dependent, in noncyclic evolution of non-degenerate quantum systems have to be taken into account to give the correct interference result in the calculation of physical quantities in states that are a superposition of instantaneous eigenstates of energy. To verify the contribution of those adiabatic phases in the interference phenomena, we consider the spin-1/2 model coupled to a precessing external magnetic field. In the model, the adiabatic phase increases in time up to reach the difference of the Berry's phases of the model when the external magnetic field completes a period.Sociedade Brasileira de Física2010-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200009Brazilian Journal of Physics v.40 n.2 2010reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332010000200009info:eu-repo/semantics/openAccessThomaz,M.T.Aguiar Pinto,A.C.Moutinho,M.eng2010-06-23T00:00:00Zoai:scielo:S0103-97332010000200009Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2010-06-23T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
Contribution of adiabatic phases to noncyclic evolution |
title |
Contribution of adiabatic phases to noncyclic evolution |
spellingShingle |
Contribution of adiabatic phases to noncyclic evolution Thomaz,M.T. Berry's phase adiabatic phase noncyclic adiabatic evolution spin-1/2 model |
title_short |
Contribution of adiabatic phases to noncyclic evolution |
title_full |
Contribution of adiabatic phases to noncyclic evolution |
title_fullStr |
Contribution of adiabatic phases to noncyclic evolution |
title_full_unstemmed |
Contribution of adiabatic phases to noncyclic evolution |
title_sort |
Contribution of adiabatic phases to noncyclic evolution |
author |
Thomaz,M.T. |
author_facet |
Thomaz,M.T. Aguiar Pinto,A.C. Moutinho,M. |
author_role |
author |
author2 |
Aguiar Pinto,A.C. Moutinho,M. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Thomaz,M.T. Aguiar Pinto,A.C. Moutinho,M. |
dc.subject.por.fl_str_mv |
Berry's phase adiabatic phase noncyclic adiabatic evolution spin-1/2 model |
topic |
Berry's phase adiabatic phase noncyclic adiabatic evolution spin-1/2 model |
description |
We show that the difference of adiabatic phases, that are basis-dependent, in noncyclic evolution of non-degenerate quantum systems have to be taken into account to give the correct interference result in the calculation of physical quantities in states that are a superposition of instantaneous eigenstates of energy. To verify the contribution of those adiabatic phases in the interference phenomena, we consider the spin-1/2 model coupled to a precessing external magnetic field. In the model, the adiabatic phase increases in time up to reach the difference of the Berry's phases of the model when the external magnetic field completes a period. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332010000200009 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
dc.source.none.fl_str_mv |
Brazilian Journal of Physics v.40 n.2 2010 reponame:Brazilian Journal of Physics instname:Sociedade Brasileira de Física (SBF) instacron:SBF |
instname_str |
Sociedade Brasileira de Física (SBF) |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Brazilian Journal of Physics |
collection |
Brazilian Journal of Physics |
repository.name.fl_str_mv |
Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF) |
repository.mail.fl_str_mv |
sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br |
_version_ |
1754734865285120000 |