Spin and pseudospin symmetries in the antinucleon spectrum of nuclei
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevC.81.064324 http://hdl.handle.net/11449/225933 |
Resumo: | Spin and pseudospin symmetries in the spectra of nucleons and antinucleons are studied in a relativistic mean-field theory with scalar and vector Woods-Saxon potentials, in which the strength of the latter is allowed to change. We observe that, for nucleons and antinucleons, the spin symmetry is of perturbative nature and it is almost an exact symmetry in the physical region for antinucleons. The opposite situation is found in the pseudospin symmetry case, which is better realized for nucleons than for antinucleons, but is of dynamical nature and cannot be viewed in a perturbative way for either nucleons or antinucleons. This is shown by computation of the spin-orbit and pseudospin-orbit couplings for selected spin and pseudospin partners in both spectra. © 2010 The American Physical Society. |
id |
UNSP_d23abb950e3267b6f0fd8b3b89261ca3 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/225933 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Spin and pseudospin symmetries in the antinucleon spectrum of nucleiSpin and pseudospin symmetries in the spectra of nucleons and antinucleons are studied in a relativistic mean-field theory with scalar and vector Woods-Saxon potentials, in which the strength of the latter is allowed to change. We observe that, for nucleons and antinucleons, the spin symmetry is of perturbative nature and it is almost an exact symmetry in the physical region for antinucleons. The opposite situation is found in the pseudospin symmetry case, which is better realized for nucleons than for antinucleons, but is of dynamical nature and cannot be viewed in a perturbative way for either nucleons or antinucleons. This is shown by computation of the spin-orbit and pseudospin-orbit couplings for selected spin and pseudospin partners in both spectra. © 2010 The American Physical Society.Escola de Ciências e Tecnologia Universidade Federal Do Rio Grande Do Norte, 59014-615 Natal, Rio Grande do NorteDepartamento de Física Instituto Tecnológico de Aeronáutica Centro Técnico Aeroespacial, 12228-900 São José dos Campos, SPDepartamento de Física Centro de Física Computacional Universidade de Coimbra, P-3004-516 CoimbraDepartamento de Física e Química Universidade Estadual Paulista, 12516-410 Guaratinguetá, São PauloDepartamento de Física e Química Universidade Estadual Paulista, 12516-410 Guaratinguetá, São PauloUniversidade Federal Do Rio Grande Do NorteCentro Técnico AeroespacialUniversidade de CoimbraUniversidade Estadual Paulista (UNESP)Lisboa, R.Malheiro, M.Alberto, P.Fiolhais, M.De Castro, A. S. [UNESP]2022-04-28T21:02:04Z2022-04-28T21:02:04Z2010-06-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevC.81.064324Physical Review C - Nuclear Physics, v. 81, n. 6, 2010.1089-490X0556-2813http://hdl.handle.net/11449/22593310.1103/PhysRevC.81.0643242-s2.0-77954059163Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review C - Nuclear Physicsinfo:eu-repo/semantics/openAccess2024-07-01T20:51:58Zoai:repositorio.unesp.br:11449/225933Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:47:38.154663Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
title |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
spellingShingle |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei Lisboa, R. |
title_short |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
title_full |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
title_fullStr |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
title_full_unstemmed |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
title_sort |
Spin and pseudospin symmetries in the antinucleon spectrum of nuclei |
author |
Lisboa, R. |
author_facet |
Lisboa, R. Malheiro, M. Alberto, P. Fiolhais, M. De Castro, A. S. [UNESP] |
author_role |
author |
author2 |
Malheiro, M. Alberto, P. Fiolhais, M. De Castro, A. S. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal Do Rio Grande Do Norte Centro Técnico Aeroespacial Universidade de Coimbra Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Lisboa, R. Malheiro, M. Alberto, P. Fiolhais, M. De Castro, A. S. [UNESP] |
description |
Spin and pseudospin symmetries in the spectra of nucleons and antinucleons are studied in a relativistic mean-field theory with scalar and vector Woods-Saxon potentials, in which the strength of the latter is allowed to change. We observe that, for nucleons and antinucleons, the spin symmetry is of perturbative nature and it is almost an exact symmetry in the physical region for antinucleons. The opposite situation is found in the pseudospin symmetry case, which is better realized for nucleons than for antinucleons, but is of dynamical nature and cannot be viewed in a perturbative way for either nucleons or antinucleons. This is shown by computation of the spin-orbit and pseudospin-orbit couplings for selected spin and pseudospin partners in both spectra. © 2010 The American Physical Society. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-28 2022-04-28T21:02:04Z 2022-04-28T21:02:04Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevC.81.064324 Physical Review C - Nuclear Physics, v. 81, n. 6, 2010. 1089-490X 0556-2813 http://hdl.handle.net/11449/225933 10.1103/PhysRevC.81.064324 2-s2.0-77954059163 |
url |
http://dx.doi.org/10.1103/PhysRevC.81.064324 http://hdl.handle.net/11449/225933 |
identifier_str_mv |
Physical Review C - Nuclear Physics, v. 81, n. 6, 2010. 1089-490X 0556-2813 10.1103/PhysRevC.81.064324 2-s2.0-77954059163 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review C - Nuclear Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128418280112128 |