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

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 t...

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Detalles Bibliográficos
Autores principales: Bes, D. R., Civitarese, Enrique Osvaldo, Maqueda, E. E., Scoccola, Norberto Nerio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126234
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126234
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
spellingShingle Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
Bes, D. R.
Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
topic_facet Física
Physics
Pairing
Neutron
L-shell
Condensed matter physics
Isoscalar
Isovector
Mathematical physics
Proton
Spin-½
Homogeneous space
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.
format Articulo
Articulo
author Bes, D. R.
Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
author_facet Bes, D. R.
Civitarese, Enrique Osvaldo
Maqueda, E. E.
Scoccola, Norberto Nerio
author_sort Bes, D. R.
title Structure of the vacuum states in the presence of isovector and isoscalar pairing correlations
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
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/126234
work_keys_str_mv AT besdr structureofthevacuumstatesinthepresenceofisovectorandisoscalarpairingcorrelations
AT civitareseenriqueosvaldo structureofthevacuumstatesinthepresenceofisovectorandisoscalarpairingcorrelations
AT maquedaee structureofthevacuumstatesinthepresenceofisovectorandisoscalarpairingcorrelations
AT scoccolanorbertonerio structureofthevacuumstatesinthepresenceofisovectorandisoscalarpairingcorrelations
bdutipo_str Repositorios
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