8 papers
New generalization of the Barboza-Alcaniz parametrization of Dark energy
Shahab Shahidi
A generalization of the Barboza-Alcaniz parametrization of dark energy is proposed. This is a three-parameter model which can resolve the shortcomings of the Barboza-Alcaniz behavi…
Dark energy and accelerating cosmological evolution in a Universe with a Weylian boundary
Tiberiu Harko, Shahab Shahidi
We investigate the influence of boundary terms in gravitational field theories, by considering that in the Einstein-Hilbert action the boundary can be described by a non-metric Wey…
Dark energy and a new realization of the matter Lagrangian
Shahab Shahidi, Sedigheh Farahzad
A new realization of the matter Lagrangian is introduced which models the dark energy component as a non-standard combination of thermodynamics quantities of the baryonic matter. W…
Cosmology in generalized hybrid metric-Palatini with matter-geometry coupling
Reza Jalali, Shahab Shahidi, Mohammad Hossein Zhoolideh Haghighi
Cosmological implications of a class of hybrid metric-Palatini gravity with a non-minimal matter-geometry coupling is considered. The theory contains a metric curvature tensor, tog…
Cosmological implications of hybrid metric-Palatini gravity
Shahab Shahidi, Shiva Kayedi
The hybrid metric-Palatini gravity with Lagrangian density is considered, where is the metric Ricci scalar and $\math…
From Barthel Randers Kropina Geometries to the Accelerating Universe: A Brief Review of Recent Advances in Finslerian Cosmology
Amine Bouali, Himanshu Chaudhary, Lehel Csillag +4
We review recent developments in cosmological models based on Finsler geometry and extensions of general relativity within this framework. Finsler geometry generalizes Riemannian g…