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http://acervodigital.unesp.br/handle/11449/130454
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DC Field | Value | Language |
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dc.contributor.author | Krein, G. | - |
dc.contributor.author | Menezes, D. P. | - |
dc.contributor.author | Pinto, M. B. | - |
dc.date.accessioned | 2014-05-27T11:18:04Z | - |
dc.date.accessioned | 2016-10-25T21:21:12Z | - |
dc.date.available | 2014-05-27T11:18:04Z | - |
dc.date.available | 2016-10-25T21:21:12Z | - |
dc.date.issued | 1996-03-07 | - |
dc.identifier | http://www.sciencedirect.com/science/article/pii/0370269395015787 | - |
dc.identifier.citation | Physics Letters B. Amsterdam: Elsevier B.V., v. 370, n. 1-2, p. 5-11, 1996. | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/11449/130454 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/130454 | - |
dc.description.abstract | The optimized δ-expansion is used to study vacuum polarization effects in the Walecka model. The optimized δ-expansion is a nonperturbative approach for field theoretic models which combines the techniques of perturbation theory and the variational principle. Vacuum effects on self-energies and the energy density of nuclear matter are studied up to script O sign(δ2). When exchange diagrams are neglected, the traditional relativistic Hartree approximation (RHA) results are exactly reproduced and, using the same set of parameters that saturate nuclear matter in the RHA, a new stable, tightly bound state at high density is found. | en |
dc.format.extent | 5-11 | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.source | Scopus | - |
dc.subject | Nonperturbative field theory | - |
dc.subject | Nuclear matter | - |
dc.subject | Relativistic nuclear models | - |
dc.title | Optimized δ expansion for the Walecka model | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Universidade Federal de Santa Catarina (UFSC) | - |
dc.contributor.institution | Université de Montpellier II | - |
dc.description.affiliation | Inst. de Fis. Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, S.P. | - |
dc.description.affiliation | Departamento de Física Univ. Federal de Santa Catarina, 88.040-900 Florianopolis, S.C. | - |
dc.description.affiliation | Lab. de Physique Mathématique Université de Montpellier II CNRS-URA 768, 34095 Montpellier Cedex 05 | - |
dc.description.affiliationUnesp | Universidade Estadual Paulista, Instituto de Física Teórica, Teórica, Rua Pamplona 145, 01405-900 São Paulo, S.P. | - |
dc.identifier.doi | http://dx.doi.org/10.1016/0370-2693(95)01578-7 | - |
dc.identifier.wos | WOS:A1996UA24100002 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.identifier.scopus | 2-s2.0-0041628970 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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