Observational constraints and dynamical analysis of Kaniadakis horizon-entropy cosmology
Hernández-Almada A. Leon G. Magaña J. García-Aspeitia M.A. Motta V. Saridakis E.N. Yesmakhanova K. Millano A.D.
1 June 2022Oxford University Press
Monthly Notices of the Royal Astronomical Society
2022#512Issue 45122 - 5134 pp.
We study the scenario of Kaniadakis horizon-entropy cosmology, which arises from the application of the gravity-thermodynamics conjecture using the Kaniadakis modified entropy. The resulting modified Friedmann equations contain extra terms that constitute an effective dark energy sector. We use data from cosmic chronometers, Type Ia supernova, H ii galaxies, strong lensing systems, and baryon acoustic oscillation observations, and we apply a Bayesian Markov chain Monte Carlo analysis to construct the likelihood contours for the model parameters. We find that the Kaniadakis parameter is constrained around 0, namely around the value where the standard Bekenstein-Hawking is recovered. Concerning the normalized Hubble parameter, we find h=0.708+0.012-0.011, a result that is independently verified by applying the H0(z) diagnostic and, thus, we conclude that the scenario at hand can alleviate the H0 tension problem. Regarding the transition redshift, the reconstruction of the cosmographic parameters gives zm T=0.715+0.042-0.041. Furthermore, we apply the Akaike, Bayesian, and deviance information criteria, and we find that in most data sets the scenario is statistical equivalent to Λ cold dark matter one. Moreover, we examine the big bang nucleosynthesis, and we show that the scenario satisfies the corresponding requirements. Additionally, we perform a phase-space analysis, and we show that the Universe past attractor is the matter-dominated epoch, while at late times the Universe results in the dark-energy-dominated solution. Finally, we show that Kaniadakis horizon-entropy cosmology accepts heteroclinic sequences, but it cannot exhibit bounce and turnaround solutions.
cosmological parameters , dark energy
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Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas, Santiago de Querétaro, 76010, Mexico
Departamento de Matemáticas, Universidad Católica del Norte, Avda. Angamos 0610 Casilla, Antofagasta, 1280, Chile
Institute of Systems Science, Durban University of Technology, PO Box 1334, Durban, 4000, South Africa
Instituto de Astrofísica and Centro de Astro-Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
Departamento de Física y Matemáticas, Universidad Iberoamericana Ciudad de México, Prolongación Paseo de la Reforma 880, México, 01219, Mexico
Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Avda. Gran Bretaña 1111, Valparaíso, Chile
Institute for Astronomy Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Lofos Nymfon, Athens, 11852, Greece
CAS Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Anhui, Hefei, 230026, China
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Nur-Sultan, 010009, Kazakhstan
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Eurasian National University, Astana, Nur-Sultan, 010008, Kazakhstan
Facultad de Ingeniería
Departamento de Matemáticas
Institute of Systems Science
Instituto de Astrofísica and Centro de Astro-Ingeniería
Departamento de Física y Matemáticas
Instituto de Física y Astronomía
Institute for Astronomy Astrophysics
CAS Key Laboratory for Researches in Galaxies and Cosmology
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
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