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Late Time Attractors of Some Varying Chaplygin Gas Cosmological Models

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dc.contributor.author Khurshudyan, Martiros
dc.contributor.author Myrzakulov, Ratbay
dc.date.accessioned 2024-09-20T10:25:14Z
dc.date.available 2024-09-20T10:25:14Z
dc.date.issued 2021
dc.identifier.citation Khurshudyan, M.; Myrzakulov, R. Late Time Attractors of Some Varying Chaplygin Gas Cosmological Models. Symmetry 2021, 13, 769. https://doi.org/10.3390/ sym13050769 ru
dc.identifier.issn 2073-8994
dc.identifier.other doi.org/10.3390/sym13050769
dc.identifier.uri http://rep.enu.kz/handle/enu/16763
dc.description.abstract The goal of this paper is to study new cosmological models where the dark energy is a varying Chaplygin gas. This specific dark energy model with non-linear EoS had been often discussed in modern cosmology. Contrary to previous studies, we consider new forms of nonlinear non-gravitational interaction between dark matter and assumed dark energy models. We applied the phase space analysis allowing understanding the late time behavior of the models. It allows demonstrating that considered non-gravitational interactions can solve the cosmological coincidence problem. On the other hand, we applied Bayesian Machine Learning technique to learn the constraints on the free parameters. In this way, we gained a better understanding of the models providing a hint which of them can be ruled out. Moreover, the learning based on the simulated expansion rate data shows that the models cannot solve the H0 tension problem. ru
dc.language.iso en ru
dc.publisher Symmetry ru
dc.relation.ispartofseries Volume 13 Issue 5;
dc.subject dynamical dark energy models ru
dc.subject bayesian machine learning ru
dc.subject accelerated expansion ru
dc.title Late Time Attractors of Some Varying Chaplygin Gas Cosmological Models ru
dc.type Article ru


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