Self-consistent quantum effects in the quark meson coupling model

Detalhes bibliográficos
Autor(a) principal: Panda, P. K. [UNESP]
Data de Publicação: 2002
Outros Autores: Braghin, F. L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1103/PhysRevC.66.055207
http://hdl.handle.net/11449/67006
Resumo: We derive the equation of state of nuclear matter for the quark-meson coupling model taking into account quantum fluctuations of the σ meson as well as vacuum polarization effects for the nucleons. This model incorporates explicitly quark degrees of freedom with quarks coupled to the scalar and vector mesons. Quantum fluctuations lead to a softer equation of state for nuclear matter giving a lower value of incompressibility than would be reached without quantum effects. The in-medium nucleon and σ-meson masses are also calculated in a self-consistent manner. The spectral function of the σ meson is calculated and the σ mass has the value increased with respect to the purely classical approximation at high densities.
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spelling Self-consistent quantum effects in the quark meson coupling modelWe derive the equation of state of nuclear matter for the quark-meson coupling model taking into account quantum fluctuations of the σ meson as well as vacuum polarization effects for the nucleons. This model incorporates explicitly quark degrees of freedom with quarks coupled to the scalar and vector mesons. Quantum fluctuations lead to a softer equation of state for nuclear matter giving a lower value of incompressibility than would be reached without quantum effects. The in-medium nucleon and σ-meson masses are also calculated in a self-consistent manner. The spectral function of the σ meson is calculated and the σ mass has the value increased with respect to the purely classical approximation at high densities.Inst. de Fís. Teórica Universidade Estadual Paulista, Rua Pamplona 145, CEP 01405-900 São Paulo, SPInstituto de Física Universidade de São Paulo, Caixa Postal 66318, CEP 05315-970 São PauloInst. de Fís. Teórica Universidade Estadual Paulista, Rua Pamplona 145, CEP 01405-900 São Paulo, SPUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Panda, P. K. [UNESP]Braghin, F. L.2014-05-27T11:20:31Z2014-05-27T11:20:31Z2002-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article552071-552077application/pdfhttp://dx.doi.org/10.1103/PhysRevC.66.055207Physical Review C - Nuclear Physics, v. 66, n. 5, p. 552071-552077, 2002.0556-2813http://hdl.handle.net/11449/6700610.1103/PhysRevC.66.055207WOS:0001797602000482-s2.0-00368761312-s2.0-0036876131.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review C: Nuclear Physicsinfo:eu-repo/semantics/openAccess2024-01-20T06:37:31Zoai:repositorio.unesp.br:11449/67006Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:32:33.598787Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Self-consistent quantum effects in the quark meson coupling model
title Self-consistent quantum effects in the quark meson coupling model
spellingShingle Self-consistent quantum effects in the quark meson coupling model
Panda, P. K. [UNESP]
title_short Self-consistent quantum effects in the quark meson coupling model
title_full Self-consistent quantum effects in the quark meson coupling model
title_fullStr Self-consistent quantum effects in the quark meson coupling model
title_full_unstemmed Self-consistent quantum effects in the quark meson coupling model
title_sort Self-consistent quantum effects in the quark meson coupling model
author Panda, P. K. [UNESP]
author_facet Panda, P. K. [UNESP]
Braghin, F. L.
author_role author
author2 Braghin, F. L.
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Panda, P. K. [UNESP]
Braghin, F. L.
description We derive the equation of state of nuclear matter for the quark-meson coupling model taking into account quantum fluctuations of the σ meson as well as vacuum polarization effects for the nucleons. This model incorporates explicitly quark degrees of freedom with quarks coupled to the scalar and vector mesons. Quantum fluctuations lead to a softer equation of state for nuclear matter giving a lower value of incompressibility than would be reached without quantum effects. The in-medium nucleon and σ-meson masses are also calculated in a self-consistent manner. The spectral function of the σ meson is calculated and the σ mass has the value increased with respect to the purely classical approximation at high densities.
publishDate 2002
dc.date.none.fl_str_mv 2002-11-01
2014-05-27T11:20:31Z
2014-05-27T11:20:31Z
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/10.1103/PhysRevC.66.055207
Physical Review C - Nuclear Physics, v. 66, n. 5, p. 552071-552077, 2002.
0556-2813
http://hdl.handle.net/11449/67006
10.1103/PhysRevC.66.055207
WOS:000179760200048
2-s2.0-0036876131
2-s2.0-0036876131.pdf
url http://dx.doi.org/10.1103/PhysRevC.66.055207
http://hdl.handle.net/11449/67006
identifier_str_mv Physical Review C - Nuclear Physics, v. 66, n. 5, p. 552071-552077, 2002.
0556-2813
10.1103/PhysRevC.66.055207
WOS:000179760200048
2-s2.0-0036876131
2-s2.0-0036876131.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physical Review C: Nuclear Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 552071-552077
application/pdf
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_ 1808129530504675328

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