Excited states of <sup>4</sup>He droplets

We study low-lying excited states of <sup>4</sup>He clusters up to a cluster size of 40 atoms in a variational framework. The ansatz wave function combines two- and three-body correlations, coming from a translationally invariant configuration interaction description, and Jastrow-type sh...

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Detalhes bibliográficos
Autores: Guardiola, R., Navarro, J., Portesi, Mariela Adelina
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2001
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/104412
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/104412
Access Level:acceso abierto
Palavra-chave:Ciencias Exactas
Física
liquid and solid helium
ground state and elementary excitations
atomic and molecular clusters
two and three body correlations
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spelling Excited states of <sup>4</sup>He dropletsGuardiola, R.Navarro, J.Portesi, Mariela AdelinaCiencias ExactasFísicaliquid and solid heliumground state and elementary excitationsatomic and molecular clusterstwo and three body correlationsWe study low-lying excited states of <sup>4</sup>He clusters up to a cluster size of 40 atoms in a variational framework. The ansatz wave function combines two- and three-body correlations, coming from a translationally invariant configuration interaction description, and Jastrow-type short-range correlation. We have previously used this scheme to determine the ground-state energies of <sup>4</sup>He and <sup>3</sup>He clusters. Here we present an extension of this ansatz wave function having a good quantum angular momentum L. The variational procedure is applied independently to the cases with L = 0,2,4, and upper bounds for the corresponding energies are thus obtained. Moreover, centroid energies for L excitations are calculated through the use of sum rules. A comparison with previous calculations is also made.Facultad de Ciencias Exactas2001info: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/10915/104412enginfo:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/98628info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.63.224519info:eu-repo/semantics/altIdentifier/issn/0163-1829info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.63.224519info:eu-repo/semantics/altIdentifier/hdl/11336/98628info: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:UNLP2024-05-08T13:00:41Zoai:sedici.unlp.edu.ar:10915/104412Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:00:41.498SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Excited states of <sup>4</sup>He droplets
title Excited states of <sup>4</sup>He droplets
spellingShingle Excited states of <sup>4</sup>He droplets
Guardiola, R.
Ciencias Exactas
Física
liquid and solid helium
ground state and elementary excitations
atomic and molecular clusters
two and three body correlations
title_short Excited states of <sup>4</sup>He droplets
title_full Excited states of <sup>4</sup>He droplets
title_fullStr Excited states of <sup>4</sup>He droplets
title_full_unstemmed Excited states of <sup>4</sup>He droplets
title_sort Excited states of <sup>4</sup>He droplets
dc.creator.none.fl_str_mv Guardiola, R.
Navarro, J.
Portesi, Mariela Adelina
author Guardiola, R.
author_facet Guardiola, R.
Navarro, J.
Portesi, Mariela Adelina
author_role author
author2 Navarro, J.
Portesi, Mariela Adelina
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
liquid and solid helium
ground state and elementary excitations
atomic and molecular clusters
two and three body correlations
topic Ciencias Exactas
Física
liquid and solid helium
ground state and elementary excitations
atomic and molecular clusters
two and three body correlations
description We study low-lying excited states of <sup>4</sup>He clusters up to a cluster size of 40 atoms in a variational framework. The ansatz wave function combines two- and three-body correlations, coming from a translationally invariant configuration interaction description, and Jastrow-type short-range correlation. We have previously used this scheme to determine the ground-state energies of <sup>4</sup>He and <sup>3</sup>He clusters. Here we present an extension of this ansatz wave function having a good quantum angular momentum L. The variational procedure is applied independently to the cases with L = 0,2,4, and upper bounds for the corresponding energies are thus obtained. Moreover, centroid energies for L excitations are calculated through the use of sum rules. A comparison with previous calculations is also made.
publishDate 2001
dc.date.none.fl_str_mv 2001
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/10915/104412
url http://sedici.unlp.edu.ar/handle/10915/104412
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/98628
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.63.224519
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.63.224519
info:eu-repo/semantics/altIdentifier/hdl/11336/98628
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
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (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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