https://doi.org/10.1140/epjp/s13360-023-04666-y
Regular Article
Scalar field dark energy: insights into cosmological evolution and black hole accretion
1
Quantum Physics and Magnetism Team, LPMC, Faculty of Science Ben M’sik, Casablanca Hassan II University, Casablanca, Morocco
2
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, 010009, Astana, Kazakhstan
3
Department of Mathematics and Statistics, Imam Mohammad Ibn Saud Islamic University (IMSIU), 13318, Riyadh, Saudi Arabia
4
Department of Physics, Faculty of Science, University of Khartoum, P.O. Box 321, 11115, Khartoum, Sudan
5
Centre for Space Research, North-West University, 2520, Potchefstroom, South Africa
6
Department of Mathematics, Omdurman Islamic Univerity, Khartoum, Sudan
7
Alneelain Center for Mathematical Sciences, Alaneelain University, Kartoum, Sudan
8
L. N. Gumilyov Eurasian National University, 010008, Astana, Kazakhstan
Received:
26
April
2023
Accepted:
6
November
2023
Published online:
20
November
2023
We propose a novel approach to parameterize the equation of state for Scalar Field Dark Energy (SFDE) and use it to derive analytical solutions for various cosmological parameters. Using statistical MCMC with Bayesian techniques, we obtain constraint values for the model parameters and analyze three observational datasets. We find a quintessence-like behavior for Dark Energy (DE) with positive values for both model parameters 
and 
. Our analysis of the CC+BAO+SNe datasets reveals that the transition redshift and the current value of the deceleration parameter are 
and 
, respectively. We also investigate the fluid flow of accretion SFDE around a Black Hole (BH) and analyze the nature of the BH’s dynamical mass during accretion, taking into account Hawking radiation and BH evaporation. Our proposed model offers insight into the nature of DE in the Universe and the behavior of BHs during accretion.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
