https://doi.org/10.1140/epjc/s10052-024-13122-9
Regular Article - Theoretical Physics
Scalarized hybrid neutron stars in scalar tensor gravity
1
Department of Physics, School of Science, Shiraz University, 71454, Shiraz, Iran
2
Biruni Observatory, School of Science, Shiraz University, 71454, Shiraz, Iran
Received:
23
February
2024
Accepted:
14
July
2024
Published online:
24
July
2024
Hybrid neutron stars, the compact objects consisting hadronic matter and strange quark matter, can be considered as the probes for the scalar tensor gravity. In this work, we explore the scalarization of hybrid neutron stars in the scalar tensor gravity. For the hadronic phase, we apply a piecewise polytropic equation of state constrained by the observational data of GW170817 and the data of six low-mass X-ray binaries with thermonuclear burst or the symmetry energy of the nuclear interaction. In addition, to describe the strange quark matter inside the hybrid neutron star, different MIT bag models are employed. We study the effects of the value of bag constant, the mass of s quark, the perturbative quantum chromodynamics correction parameter, and the density jump at the surface of quark-hadronic phase transition on the scalarization of hybrid neutron stars. Our results confirm that the scalarization is more sensitive to the value of bag constant, the mass of s quark, and the density jump compared to the perturbative quantum chromodynamics correction parameter.
© The Author(s) 2024
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