| Texto completo | |
| Autor(es): |
Marzola, Isabella
;
Duarte, Sergio B.
;
Lenzi, Cesar H.
;
Lourenco, Odilon
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 108, n. 8, p. 11-pg., 2023-10-05. |
| Resumo | |
We perform an improvement in a thermodynamical consistent model with density-dependent quark masses (m0u,d,s) by introducing effects of quark confinement/deconfinement phase transition, at highdensity regime and zero temperature, by means of the traced Polyakov loop (phi). We use realistic values for the current quark masses, provided by the Particle Data Group, and replace the constants of the interacting part of m0u,d,s by functions of phi, leading to a first-order phase-transition structure, for symmetric and stellar quark matter, with phi being the order parameter. We show that the improved model points out the direction of the chiral-symmetry restoration due to the emergence of a deconfined phase. In another application, we construct quark star mass-radius profiles, obtained from this new model, and show to be possible to satisfy recent astrophysical observational data coming from the LIGO and Virgo Collaboration, and the Neutron star Interior Composition Explorer (NICER) mission concerning the millisecond pulsars PSR J0030 + 0451 and PSR J0740 + 6620. (AU) | |
| Processo FAPESP: | 22/03575-3 - Correlações de curto alcance em um metamodelo hadrônico: descrição da matéria nuclear e estelar |
| Beneficiário: | Odilon Lourenço da Silva Filho |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |
| Processo FAPESP: | 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos |
| Beneficiário: | Brett Vern Carlson |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |