Many-body theory for systems of composite hadrons
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/224174 |
Resumo: | Many-body systems of composite hadrons are characterized by processes that involve the simultaneous presence of hadrons and their constituents. We briefly review several methods that have been devised to study such systems and present a novel method that is based on the ideas of mapping between physical and ideal Fock spaces. The method, known as the Fock-Tani representation, was invented years ago in the context of atomic physics problems and was recently extended to hadronic physics. Starting with the Fock-space representation of single-hadron states, a change of representation is implemented by a unitary transformation such that composites are redescribed by elementary Bose and Fermi field operators in an extended Fock space. When the unitary transformation is applied to the microscopic quark Hamiltonian, effective, Hermitian Hamiltonians with a clear physical interpretation are obtained. The use of the method in connection with the linked-cluster formalism to describe short-range correlations and quark deconfinement effects in nuclear matter is discussed. As an application of the method, an effective nucleon-nucleon interaction is derived from a constituent quark model and used to obtain the equation of state of nuclear matter in the Hartree-Fock approximation. Copyright © 2000 by MAIK Nauka/Interperiodica (Russia). |
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Many-body theory for systems of composite hadronsMany-body systems of composite hadrons are characterized by processes that involve the simultaneous presence of hadrons and their constituents. We briefly review several methods that have been devised to study such systems and present a novel method that is based on the ideas of mapping between physical and ideal Fock spaces. The method, known as the Fock-Tani representation, was invented years ago in the context of atomic physics problems and was recently extended to hadronic physics. Starting with the Fock-space representation of single-hadron states, a change of representation is implemented by a unitary transformation such that composites are redescribed by elementary Bose and Fermi field operators in an extended Fock space. When the unitary transformation is applied to the microscopic quark Hamiltonian, effective, Hermitian Hamiltonians with a clear physical interpretation are obtained. The use of the method in connection with the linked-cluster formalism to describe short-range correlations and quark deconfinement effects in nuclear matter is discussed. As an application of the method, an effective nucleon-nucleon interaction is derived from a constituent quark model and used to obtain the equation of state of nuclear matter in the Hartree-Fock approximation. Copyright © 2000 by MAIK Nauka/Interperiodica (Russia).Institut für Kernphysik Universität Mainz, D-55099 MainzInst. de Fis. Téorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SPInst. de Fis. Téorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SPUniversität MainzUniversidade Estadual Paulista (UNESP)Krein, G. [UNESP]2022-04-28T19:55:01Z2022-04-28T19:55:01Z2000-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article603-618Physics of Particles and Nuclei, v. 31, n. 5, p. 603-618, 2000.1063-7796http://hdl.handle.net/11449/2241742-s2.0-0034368921Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysics of Particles and Nucleiinfo:eu-repo/semantics/openAccess2022-04-28T19:55:01Zoai:repositorio.unesp.br:11449/224174Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:55:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Many-body theory for systems of composite hadrons |
title |
Many-body theory for systems of composite hadrons |
spellingShingle |
Many-body theory for systems of composite hadrons Krein, G. [UNESP] |
title_short |
Many-body theory for systems of composite hadrons |
title_full |
Many-body theory for systems of composite hadrons |
title_fullStr |
Many-body theory for systems of composite hadrons |
title_full_unstemmed |
Many-body theory for systems of composite hadrons |
title_sort |
Many-body theory for systems of composite hadrons |
author |
Krein, G. [UNESP] |
author_facet |
Krein, G. [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universität Mainz Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Krein, G. [UNESP] |
description |
Many-body systems of composite hadrons are characterized by processes that involve the simultaneous presence of hadrons and their constituents. We briefly review several methods that have been devised to study such systems and present a novel method that is based on the ideas of mapping between physical and ideal Fock spaces. The method, known as the Fock-Tani representation, was invented years ago in the context of atomic physics problems and was recently extended to hadronic physics. Starting with the Fock-space representation of single-hadron states, a change of representation is implemented by a unitary transformation such that composites are redescribed by elementary Bose and Fermi field operators in an extended Fock space. When the unitary transformation is applied to the microscopic quark Hamiltonian, effective, Hermitian Hamiltonians with a clear physical interpretation are obtained. The use of the method in connection with the linked-cluster formalism to describe short-range correlations and quark deconfinement effects in nuclear matter is discussed. As an application of the method, an effective nucleon-nucleon interaction is derived from a constituent quark model and used to obtain the equation of state of nuclear matter in the Hartree-Fock approximation. Copyright © 2000 by MAIK Nauka/Interperiodica (Russia). |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-12-01 2022-04-28T19:55:01Z 2022-04-28T19:55:01Z |
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 |
Physics of Particles and Nuclei, v. 31, n. 5, p. 603-618, 2000. 1063-7796 http://hdl.handle.net/11449/224174 2-s2.0-0034368921 |
identifier_str_mv |
Physics of Particles and Nuclei, v. 31, n. 5, p. 603-618, 2000. 1063-7796 2-s2.0-0034368921 |
url |
http://hdl.handle.net/11449/224174 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics of Particles and Nuclei |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
603-618 |
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 |
|
_version_ |
1797789680681353216 |