Regular Article - Theoretical Physics
Evolution of primordial black holes in f(Q) gravity with non-linear equation of state
Department of Physics, University of North Bengal, Siliguri, 734 013, Darjeeling, West Bengal, India
Accepted: 3 July 2022
Published online: 15 July 2022
We study evolution of primordial black holes (PBH) in the f(Q) modified gravity for matter accretion from the cosmic fluid surrounding the PBH. For matter described by non-linear equation of state , the accretion of matter in PBH is probed. Two different branches of non-linear EoS is considered here namely, (i) modified Chaplygin gas (MCG) and (ii) viscous fluid in addition to barotropic fluid. We also probe the EoS needed for the emergent universe which admits different compositions of the cosmic fluid surrounding the black hole to probe the evolution and then compared the evolutionary features for the other polynomial form of the EoS. In f(Q) modified gravity, primordial black holes are found to gain mass in the early epoch which finally attains a saturated mass. The picture is different from that of GR as well as gravity. We have also compared the PBH evolution in f(Q)-gravity with or without the MCG.
© The Author(s) 2022
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.