Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations

Autores
Bes, D. R.; Civitarese, Enrique Osvaldo; Maqueda, E. E.; Scoccola, Norberto Nerio
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The long standing problem of proton-neutron pairing and, in particular, the limitations imposed on the solutions by the available symmetries, is revisited. We look for solutions with nonvanishing expectation values of the proton Δp, the neutron Δn, and the isoscalar Δ0 gaps. For an equal number of protons and neutrons we find two solutions with Δp = ± Δn, respectively. The behavior and structure of these solutions differ for spin saturated (single l shell) and spin unsaturared systems (single j shell). In the former case the BCS results are checked against an exact calculation.
Facultad de Ciencias Exactas
Materia
Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126234
Acceder
id SEDICI_57961bf4020acd213e078c5cd832e901
oai_identifier_str oai:sedici.unlp.edu.ar:10915/126234
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Structure of the vacuum states in the presence of isovector and isoscalar pairing correlationsBes, D. R.Civitarese, Enrique OsvaldoMaqueda, E. E.Scoccola, Norberto NerioFísicaPhysicsPairingNeutronL-shellCondensed matter physicsIsoscalarIsovectorMathematical physicsProtonSpin-½Homogeneous spaceThe long standing problem of proton-neutron pairing and, in particular, the limitations imposed on the solutions by the available symmetries, is revisited. We look for solutions with nonvanishing expectation values of the proton Δ<sub>p</sub>, the neutron Δ<sub>n</sub>, and the isoscalar Δ<sub>0</sub> gaps. For an equal number of protons and neutrons we find two solutions with Δ<sub>p</sub> = ± Δ<sub>n</sub>, respectively. The behavior and structure of these solutions differ for spin saturated (single l shell) and spin unsaturared systems (single j shell). In the former case the BCS results are checked against an exact calculation.Facultad de Ciencias Exactas2000-01-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126234enginfo:eu-repo/semantics/altIdentifier/issn/0556-2813info:eu-repo/semantics/altIdentifier/issn/1089-490Xinfo:eu-repo/semantics/altIdentifier/arxiv/nucl-th/9907007info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.61.024315info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:13Zoai:sedici.unlp.edu.ar:10915/126234Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:14.205SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
title Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
spellingShingle Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
Bes, D. R.
Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
title_short Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
title_full Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
title_fullStr Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
title_full_unstemmed Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
title_sort Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
dc.creator.none.fl_str_mv Bes, D. R.
Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
author Bes, D. R.
author_facet Bes, D. R.
Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
author_role author
author2 Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
author2_role author
author
author
dc.subject.none.fl_str_mv Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
topic Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
dc.description.none.fl_txt_mv The long standing problem of proton-neutron pairing and, in particular, the limitations imposed on the solutions by the available symmetries, is revisited. We look for solutions with nonvanishing expectation values of the proton Δ<sub>p</sub>, the neutron Δ<sub>n</sub>, and the isoscalar Δ<sub>0</sub> gaps. For an equal number of protons and neutrons we find two solutions with Δ<sub>p</sub> = ± Δ<sub>n</sub>, respectively. The behavior and structure of these solutions differ for spin saturated (single l shell) and spin unsaturared systems (single j shell). In the former case the BCS results are checked against an exact calculation.
Facultad de Ciencias Exactas
description The long standing problem of proton-neutron pairing and, in particular, the limitations imposed on the solutions by the available symmetries, is revisited. We look for solutions with nonvanishing expectation values of the proton Δ<sub>p</sub>, the neutron Δ<sub>n</sub>, and the isoscalar Δ<sub>0</sub> gaps. For an equal number of protons and neutrons we find two solutions with Δ<sub>p</sub> = ± Δ<sub>n</sub>, respectively. The behavior and structure of these solutions differ for spin saturated (single l shell) and spin unsaturared systems (single j shell). In the former case the BCS results are checked against an exact calculation.
publishDate 2000
dc.date.none.fl_str_mv 2000-01-20
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/126234
url http://sedici.unlp.edu.ar/handle/10915/126234
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0556-2813
info:eu-repo/semantics/altIdentifier/issn/1089-490X
info:eu-repo/semantics/altIdentifier/arxiv/nucl-th/9907007
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.61.024315
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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