Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange

Detalhes bibliográficos
Autor(a) principal: de Llano, M
Data de Publicação: 1975
Outros Autores: Pimentel, B, Ramírez, S
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/0003-4916(75)90138-4
http://hdl.handle.net/11449/231123
Resumo: A variety of anomalous (non-plane-wave) single-particle permanent (determinant) states consisting of localized and orthonormal but mutually overlapping orbitals, are found to have lower energy than the normal (plane-wave) states. This is shown to occur in a considerable region of the coupling-constant vs density plane, for simple repulsive interactions. New effects, attributable to the presence of overlap (and thus exchange) appear. Among these are a relatively stable antiferromagnetic liquid state emerging before the crystalline state. Also, for spinless bosons or fermions, the density region of fluid stability no longer shrinks to zero even for arbitrarily strong coupling. Effects of attractive forces are also treated. © 1975.
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spelling Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchangeA variety of anomalous (non-plane-wave) single-particle permanent (determinant) states consisting of localized and orthonormal but mutually overlapping orbitals, are found to have lower energy than the normal (plane-wave) states. This is shown to occur in a considerable region of the coupling-constant vs density plane, for simple repulsive interactions. New effects, attributable to the presence of overlap (and thus exchange) appear. Among these are a relatively stable antiferromagnetic liquid state emerging before the crystalline state. Also, for spinless bosons or fermions, the density region of fluid stability no longer shrinks to zero even for arbitrarily strong coupling. Effects of attractive forces are also treated. © 1975.Instituto de Física Teórica, São PauloInstituto de Física Teóricade Llano, MPimentel, BRamírez, S2022-04-29T08:43:45Z2022-04-29T08:43:45Z1975-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-17http://dx.doi.org/10.1016/0003-4916(75)90138-4Annals of Physics, v. 90, n. 1, p. 1-17, 1975.1096-035X0003-4916http://hdl.handle.net/11449/23112310.1016/0003-4916(75)90138-42-s2.0-49549141659Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnnals of Physicsinfo:eu-repo/semantics/openAccess2022-04-29T08:43:45Zoai:repositorio.unesp.br:11449/231123Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:58:05.262849Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
title Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
spellingShingle Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
de Llano, M
title_short Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
title_full Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
title_fullStr Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
title_full_unstemmed Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
title_sort Quantum fluid-solid transition in a simple variational approach II. Effects of overlap and exchange
author de Llano, M
author_facet de Llano, M
Pimentel, B
Ramírez, S
author_role author
author2 Pimentel, B
Ramírez, S
author2_role author
author
dc.contributor.none.fl_str_mv Instituto de Física Teórica
dc.contributor.author.fl_str_mv de Llano, M
Pimentel, B
Ramírez, S
description A variety of anomalous (non-plane-wave) single-particle permanent (determinant) states consisting of localized and orthonormal but mutually overlapping orbitals, are found to have lower energy than the normal (plane-wave) states. This is shown to occur in a considerable region of the coupling-constant vs density plane, for simple repulsive interactions. New effects, attributable to the presence of overlap (and thus exchange) appear. Among these are a relatively stable antiferromagnetic liquid state emerging before the crystalline state. Also, for spinless bosons or fermions, the density region of fluid stability no longer shrinks to zero even for arbitrarily strong coupling. Effects of attractive forces are also treated. © 1975.
publishDate 1975
dc.date.none.fl_str_mv 1975-01-01
2022-04-29T08:43:45Z
2022-04-29T08:43:45Z
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/10.1016/0003-4916(75)90138-4
Annals of Physics, v. 90, n. 1, p. 1-17, 1975.
1096-035X
0003-4916
http://hdl.handle.net/11449/231123
10.1016/0003-4916(75)90138-4
2-s2.0-49549141659
url http://dx.doi.org/10.1016/0003-4916(75)90138-4
http://hdl.handle.net/11449/231123
identifier_str_mv Annals of Physics, v. 90, n. 1, p. 1-17, 1975.
1096-035X
0003-4916
10.1016/0003-4916(75)90138-4
2-s2.0-49549141659
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Annals of Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-17
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
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