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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Vector interaction strength in Polyakov-Nambu-Jona-Lasinio models from hadron-quark phase diagrams

Texto completo
Autor(es):
Lourenco, O. [1] ; Dutra, M. [1] ; Frederico, T. [1] ; Delfino, A. [2] ; Malheiro, M. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] CTA, Inst Tecnol Aeronaut, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24210150 Niteroi, RJ - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Physical Review D; v. 85, n. 9 MAY 25 2012.
Citações Web of Science: 28
Resumo

We estimate the vector interaction strength of the Polyakov-Nambu-Jona-Lasinio (PNJL) parametrizations, assuming that its transition curves should be as close as possible to the recently studied RMF-PNJL hadron-quark phase diagrams. Such diagrams are obtained matching relativistic mean-field hadronic models and the PNJL quark ones. By using this method we found for the magnitude of the vector interaction, often treated as a free parameter, a range of 7.66 GeV-2 less than or similar to G(V) less than or similar to 16.13 GeV-2, or equivalently, 1.52 less than or similar to G(V)/G(s) less than or similar to 3.2, with G(s) being the scalar coupling constant of the model. These values are compatible but restrict the range of 4 GeV-2 less than or similar to G(V) less than or similar to 19 GeV-2, recently obtained from lattice QCD data through a different mean-field model approach. (AU)

Processo FAPESP: 07/03633-3 - A matéria hadrônica e QCD em astrofísica: supernovas, GRBS e estrelas compactas
Beneficiário:Jorge Ernesto Horvath
Linha de fomento: Auxílio à Pesquisa - Temático