| Full text | |
| Author(s): |
Jimenez, Jose C.
;
Pretel, Juan M. Z.
;
Fraga, Eduardo S.
;
Joras, Sergio E.
;
Reis, Ribamar R. R.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 7, p. 17-pg., 2022-07-01. |
| Abstract | |
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) | |
| FAPESP's process: | 18/24720-6 - Exploring the QCD phase diagram |
| Grantee: | Frédérique Marie Brigitte Sylvie Grassi |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 20/07791-7 - Hydrodynamics for the Beam Energy Scan: 3+1 viscous hydrodynamics with baryon diffusion |
| Grantee: | José Carlos Jiménez Apaza |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |