Continuum discretised BCS approach for weakly bound nuclei

The Bardeen-Cooper-Schrieffer (BCS) formalism is extended by including the single-particle continuum in order to analyse the evolution of pairing in an isotopic chain from stability up to the drip line. We propose a continuum discret ized generalized BCS based on single-particle pseudostates (PS). T...

Descripción completa

Detalles Bibliográficos
Autores: Alonso Alonso, Clara Eugenia, Fortunato, Lorenzo, Vitturi, Andrea, Lay Valera, José Antonio
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/64675
Acceso en línea:http://hdl.handle.net/11441/64675
https://doi.org/0000-0003-2137-635X
Access Level:acceso abierto
Palabra clave:BCS
Pairing
Weakly bound systems
Continuum
id ES_edbbdddb7c2c852416f8e698484e9e17
oai_identifier_str oai:idus.us.es:11441/64675
network_acronym_str ES
network_name_str España
repository_id_str
spelling Continuum discretised BCS approach for weakly bound nucleiAlonso Alonso, Clara EugeniaFortunato, LorenzoVitturi, AndreaLay Valera, José AntonioBCSPairingWeakly bound systemsContinuumThe Bardeen-Cooper-Schrieffer (BCS) formalism is extended by including the single-particle continuum in order to analyse the evolution of pairing in an isotopic chain from stability up to the drip line. We propose a continuum discret ized generalized BCS based on single-particle pseudostates (PS). These PS are generated from the diagonalization of the single-particle Hamiltonian within a Transformed Harmonic Oscillator (THO) basis. The consistency of the results versus the size of the basis is studied. The method is applied to neutron rich Oxygen and Carbon is otopes and compared with similar previous works and available experimental data. We make use of the flexibility of the proposed model in order to study the evolution of the occupation of the low-energy continuum when the system becomes weakly bound. We find a larger influence of the non-resonant continuum as long as the Fermi level approaches zero.España, Ministerio de Economía y Competitividad FIS2014-53448-C2-1-PJunta de Andalucía FQM-160Junta de Andalucía P11-FQM-7632Programa Consolider-Ingenio CSD2007- 00042Comisión Europea 600376IOP PublishingFísica Atómica, Molecular y Nuclear2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/64675https://doi.org/0000-0003-2137-635Xreponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Physics G: Nuclear and Particle Physics, 43 (8), 1-19.info:eu-repo/grantAgreement/MINECO/FIS2014-53448-C2-1-P/FQM-160P11-FQM-7632CSD2007- 00042info:eu-repo/grantAgreement/EC/FP7/600376https://orcid.org/0000-0003-2137-635Xinfo:eu-repo/semantics/openAccessoai:idus.us.es:11441/646752026-06-17T12:51:07Z
dc.title.none.fl_str_mv Continuum discretised BCS approach for weakly bound nuclei
title Continuum discretised BCS approach for weakly bound nuclei
spellingShingle Continuum discretised BCS approach for weakly bound nuclei
Alonso Alonso, Clara Eugenia
BCS
Pairing
Weakly bound systems
Continuum
title_short Continuum discretised BCS approach for weakly bound nuclei
title_full Continuum discretised BCS approach for weakly bound nuclei
title_fullStr Continuum discretised BCS approach for weakly bound nuclei
title_full_unstemmed Continuum discretised BCS approach for weakly bound nuclei
title_sort Continuum discretised BCS approach for weakly bound nuclei
dc.creator.none.fl_str_mv Alonso Alonso, Clara Eugenia
Fortunato, Lorenzo
Vitturi, Andrea
Lay Valera, José Antonio
author Alonso Alonso, Clara Eugenia
author_facet Alonso Alonso, Clara Eugenia
Fortunato, Lorenzo
Vitturi, Andrea
Lay Valera, José Antonio
author_role author
author2 Fortunato, Lorenzo
Vitturi, Andrea
Lay Valera, José Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
dc.subject.none.fl_str_mv BCS
Pairing
Weakly bound systems
Continuum
topic BCS
Pairing
Weakly bound systems
Continuum
description The Bardeen-Cooper-Schrieffer (BCS) formalism is extended by including the single-particle continuum in order to analyse the evolution of pairing in an isotopic chain from stability up to the drip line. We propose a continuum discret ized generalized BCS based on single-particle pseudostates (PS). These PS are generated from the diagonalization of the single-particle Hamiltonian within a Transformed Harmonic Oscillator (THO) basis. The consistency of the results versus the size of the basis is studied. The method is applied to neutron rich Oxygen and Carbon is otopes and compared with similar previous works and available experimental data. We make use of the flexibility of the proposed model in order to study the evolution of the occupation of the low-energy continuum when the system becomes weakly bound. We find a larger influence of the non-resonant continuum as long as the Fermi level approaches zero.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/64675
https://doi.org/0000-0003-2137-635X
url http://hdl.handle.net/11441/64675
https://doi.org/0000-0003-2137-635X
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Physics G: Nuclear and Particle Physics, 43 (8), 1-19.
info:eu-repo/grantAgreement/MINECO/FIS2014-53448-C2-1-P/
FQM-160
P11-FQM-7632
CSD2007- 00042
info:eu-repo/grantAgreement/EC/FP7/600376
https://orcid.org/0000-0003-2137-635X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423530794287104
score 15.300719

Similares en LA Referencia