| Texto completo | |
| Autor(es): |
Jimenez, Jose C.
;
Pretel, Juan M. Z.
;
Fraga, Eduardo S.
;
Joras, Sergio E.
;
Reis, Ribamar R. R.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 7, p. 17-pg., 2022-07-01. |
| Resumo | |
We investigate the structure of quark stars in the framework of f(R) = R + alpha R-2 gravity using an equation of state for cold quark matter obtained from perturbative QCD, parametrized only by the renormalization scale. We show that a considerably large range of the free parameter alpha, within and even beyond the constraints previously reported in the literature, yield non-negligible modifications in the mass and radius of stars with large central mass densities. Their stability against baryon evaporation is analyzed through the behavior of the associated total binding energies which are slightly affected by the modified gravity term in the regime of high proper (baryon) masses. (AU) | |
| Processo FAPESP: | 18/24720-6 - Exploração do diagrama de fase da QCD |
| Beneficiário: | Frédérique Marie Brigitte Sylvie Grassi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/07791-7 - Hidrodinâmica para o Beam Energy Scan: hidrodinâmica viscosa com difusão bariônica em 31 dimensões |
| Beneficiário: | José Carlos Jiménez Apaza |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |