A Comparative Analysis of In-Medium Spectral Functions for N(940) and N (au)(1535) in Real-Time Thermal Field Theory

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorGhosh, Sabyasachi-
Data de aceite: dc.date.accessioned2021-03-10T21:29:33Z-
Data de disponibilização: dc.date.available2021-03-10T21:29:33Z-
Data de envio: dc.date.issued2015-03-18-
Data de envio: dc.date.issued2015-03-18-
Data de envio: dc.date.issued2014-12-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s13538-014-0271-1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/116381-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/116381-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionProcesso FAPESP: 12/16766-0-
Descrição: dc.descriptionIn the real-time thermal field theory, the nucleon self-energy at finite temperature and density is evaluated where an extensive set of pion-baryon (pi B) loops are consider. On the other side, the in-medium self-energy of N (au)(1535) for pi N and eta N loops is also determined in the same framework. The detail branch cut structures for these different pi B loops for nucleon N(940) and pi N, eta N loops for N (au)(1535) are addressed. Using the total self-energy of N(940) and N (au)(1535), which contain the contributions of their corresponding loop diagrams, the complete structures of their in-medium spectral functions have been obtained. The Landau and unitary cut contributions provide two separate peak structures in the nucleon spectral function while N (au)(1535) has a single peak structure in its unitary cuts. At high temperature, the peak structures of both at their individual poles are attenuated while at high density Landau peak structure of nucleon is completely suppressed and its unitary peak structure is tending to be shifted towards the melted peak of N (au)(1535). The non-trivial modifications of these chiral partners may indicate some association of chiral symmetry restoration.-
Formato: dc.format789-797-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationBrazilian Journal Of Physics-
Relação: dc.relation1.082-
Relação: dc.relation0,276-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectThermal field theory-
Palavras-chave: dc.subjectHadronic physics-
Palavras-chave: dc.subjectIn-medium spectral function-
Título: dc.titleA Comparative Analysis of In-Medium Spectral Functions for N(940) and N (au)(1535) in Real-Time Thermal Field Theory-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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