Zobrazeno 1 - 10
of 7 613
pro vyhledávání: '"MISHRA, B"'
This study effectively reconstructs a cosmological model utilizing covariant $f(Q)$ gravity within Connection-III and FLRW spacetime. The dynamic behavior of the reconstructed model is thoroughly analyzed using the Hubble parameter $H(z)$ and various
Externí odkaz:
http://arxiv.org/abs/2408.12846
In this paper, we have introduced a numerical method for solving the Friedmann equations of modified $f(\mathcal{G})$ gravity in the presence of pressureless matter, enabling us to predict the redshift behavior of the Hubble expansion rate. To evalua
Externí odkaz:
http://arxiv.org/abs/2408.03683
In this paper, we have outlined the development of an autonomous dynamical system within a general scalar-tensor gravity framework. This framework encompasses the overall structure of the non-minimally coupled scalar field functions for both the tors
Externí odkaz:
http://arxiv.org/abs/2408.03417
In this work, we consider the corrections to the cosmological models based on the teleparallel equivalent of general relativity induced by the non-minimal coupling between scalar field and torsion. To determine these corrections, we consider a power-
Externí odkaz:
http://arxiv.org/abs/2407.14542
In this paper, we have investigated the phase space analysis in modified Galileon cosmology, where the Galileon term is considered a coupled scalar field, $F(\phi)$. We focus on the exponential type function of $F(\phi)$ and the three well-motivated
Externí odkaz:
http://arxiv.org/abs/2407.11428
In the paper, we present an accelerating cosmological model in $f(R,\mathcal{L}_{m})$ gravity with the parameter constrained through the cosmological data sets. At the beginning, we have employed a functional form of $f(R,\mathcal{L}_{m}) =\frac{R}{2
Externí odkaz:
http://arxiv.org/abs/2407.09569
Publikováno v:
Journal of Cosmology and Astroparticle Physics, 2024(09), 011
Assuming static and spherically symmetric stars with perfect fluid matter, we used realistic equations of state to study neutron stars in covariant $f(Q)$ gravity. The structure profiles and properties of neutron stars such as mass, radius and compac
Externí odkaz:
http://arxiv.org/abs/2407.03669
Publikováno v:
Phys. Lett. B 857 (2024) 138968
In this paper, we investigate the role of scalar field potentials in the dynamical evolution of the Universe. A gravity theory with a non-minimally coupled scalar field with torsion in the geometrical action simulating effective dark energy is consid
Externí odkaz:
http://arxiv.org/abs/2406.15896
In the paper, only Static Spherically Symmetric space-times in four dimensions are considered within modified gravity models. The non-singular static metrics, including black holes not admitting a de Sitter core in the center and traversable wormhole
Externí odkaz:
http://arxiv.org/abs/2406.01241
In this paper, we have presented a power law cosmological model and its dynamical system analysis in $f(T,\phi)$ gravity, where $T$ is the torsion scalar and $\phi$ is the canonical scalar field. The two well-motivated forms of the non-minimal coupli
Externí odkaz:
http://arxiv.org/abs/2405.10354