Աստղաֆիզիկա = Астрофизика = Astrophysics
Мишра К. Р., Кумар Р., Пасиф Ш. К. Д.
Пересмотр параметризации Бермана параметра Хаббла в контексте позднего ускорения
Գլխավոր խմբ․՝ Վ․ Հ․ Համբարձումյան (1965-1987) ; Լ․ Վ․ Միրզոյան (1988-1999) ; Դ․ Մ․ Սեդրակյան (2000-2017) ; Ա․ Գ․ Նիկողոսյան (2018-)
In this paper, we have revisited the Berman's idea of the variation of Hubble parameter. While previously explored in the context of -varying cosmologies, where scale factor variations yield linear universe expansion, this parametrization has undergone extensive scrutiny. Our investigation, however, explores into its implications in the context of late-time cosmic acceleration, within the framework of classical general relativity, adopting the Friedmann-Lemaître-Robertson-Walker (FLRW) spacetime as our background metric. Our analysis offers a precise solution to Einstein's field equations (EFEs) in a model-independent way, affording a thorough assessment of both geometrical and physical model parameters. Additionally, this study supplements its findings with graphical representations of the evolving cosmological parameters across flat, closed, and open universe scenarios, all subject to constraints derived from the model parameters. In synthesizing these results, we shed light on the intricate interplay between cosmic acceleration, dark energy, and the parametrization of the Hubble parameter, thereby providing valuable insights into the fundamental mechanics of our universe.
Երևան
click here to follow the link ; oai:arar.sci.am:376081
ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան
Feb 24, 2025
Jun 27, 2024
25
https://arar.sci.am/publication/406931
Edition name | Date |
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Mishra, K. R., RE-Examining Berman's Parametrization Of The Hubble Parameter In The Context Of Late-Time Acceleration | Feb 24, 2025 |
Nikoghosyan, E. H. Harutyunian, H. A. Azatyan, N. M. Grigoryan, A. M.
Игнатовский, А. Ю. Գլխավոր խմբ․՝ Վ․ Հ․ Համբարձումյան (1965-1987) Լ․ Վ․ Միրզոյան (1988-1999) Դ․ Մ․ Սեդրակյան (2000-2017) Ա․ Գ․ Նիկողոսյան (2018-)
Andronov, Ivan L. Andrych, Kateryna D. Chinarova, Lidia L. Tvardovskyi, Dmytro E.
Assylkhan Bibossinov Denis Yurin Chingis Omarov