Zobrazeno 1 - 10
of 470
pro vyhledávání: '"Bandyopadhyay, Abhijit"'
We investigate two classes of non-minimally coupled curvature-matter models in the FLRW universe with a perfect fluid and analyze their cosmological implications using Supernova Ia, Observed Hubble Data, and Baryon Acoustic Oscillation measurements.
Externí odkaz:
http://arxiv.org/abs/2407.14791
We investigate an interacting quintessence dark energy - dark matter scenario and its impact on structure formation by analyzing the evolution of scalar perturbations. The interaction is introduced by incorporating a non-zero source term into the con
Externí odkaz:
http://arxiv.org/abs/2402.18882
Publikováno v:
European Physical Journal C, 84, 236 (2024)
In this study, we analyze the dynamics of the interaction between dark matter and curvature-driven dark energy in viable $f(R)$ gravity models using the framework of dynamical system analysis. We incorporate this interaction by introducing a source t
Externí odkaz:
http://arxiv.org/abs/2310.05578
Modified theories of gravity encompass a class of $f(R)$-models that seek to elucidate the observed late time accelerated expansion of the universe. In this study, we examine a set of viable $f(R)$ models (Hu-Sawicki: two cases, Satrobinsky, Tsujikaw
Externí odkaz:
http://arxiv.org/abs/2306.12585
We considered non-minimally coupled curvature-matter models of gravity in a FRW universe filled with perfect fluid and investigated its cosmological implications in the light of Pantheon compilation of 1048 Supernovae Ia data points along with 54 dat
Externí odkaz:
http://arxiv.org/abs/2303.06961
Publikováno v:
Eur. Phys. J. Plus (2022) 137, 1271
It has been shown by \textit{Scherrer and Putter et.al} that, when dynamics of dark energy is driven by a homogeneous $k-$essence scalar field $\phi$, with a Lagrangian of the form $L = V_0F(X)$ with a constant potential $V_0$ and $X = \frac{1}{2}\na
Externí odkaz:
http://arxiv.org/abs/2207.00888