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Inflation from the Symmetry of the Generalized Cosmological Model

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dc.contributor.author Yerzhanov, Koblandy
dc.contributor.author Bauyrzhan, Gulnur
dc.contributor.author Altaibayeva, Aziza
dc.contributor.author Myrzakulov, Ratbay
dc.date.accessioned 2024-09-20T05:30:07Z
dc.date.available 2024-09-20T05:30:07Z
dc.date.issued 2021
dc.identifier.citation Yerzhanov, K.; Bauyrzhan, G.; Altaibayeva, A.; Myrzakulov, R. Inflation from the Symmetry of the Generalized Cosmological Model. Symmetry 2021, 13, 2254. https:// doi.org/10.3390/sym13122254 ru
dc.identifier.issn 2073-8994
dc.identifier.other doi.org/10.3390/sym13122254
dc.identifier.uri http://rep.enu.kz/handle/enu/16718
dc.description.abstract It is shown that the inflationary model is the result of the symmetry of the generalized F(R, T, X, ϕ)-cosmological model using the Noether symmetry. It leads to a solution, a particular case of which is Starobinsky’s cosmological model. It is shown that even in the more particular case of cosmological models F(R, X, ϕ) and F(T, X, ϕ) the Monge–Ampère equation is still obtained, one of the solutions including the Starobinsky model. For these models, it is shown that one can obtain both power-law and exponential solutions for the scale factor from the Euler–Lagrange equations. In this case, the scalar field ϕ has similar time dependences, exponential and exponential. The resulting form of the Lagrangian of the model allows us to consider it as a model with R 2 or X 2 . However, it is also shown that previously less studied models with a non-minimal relationship between R and X are important, as one of the possible models. It is shown that in this case the power-law model can have a limited evolutionary period with a negative value of the kinetic term. ru
dc.language.iso en ru
dc.publisher Symmetry ru
dc.relation.ispartofseries Volume 13 Issue 12;
dc.subject symmetry ru
dc.subject inflation ru
dc.subject alternative gravity ru
dc.subject cosmology ru
dc.subject torsion ru
dc.subject scalar ru
dc.title Inflation from the Symmetry of the Generalized Cosmological Model ru
dc.type Article ru


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