The constrained cosmological model in Lyra geometry

Abstract

In this article, we study a flat homogeneous FLRW model in Lyra geometry which is described by a time-dependent displacement vector. We consider an appropriate parametrization of the energy density of scalar field ${\rho }_{\varphi }$ in terms of the cosmic scale factor. The result shows two transitions from deceleration to acceleration. Furthermore, we constrain the model parameter $\alpha$ and the displacement field vector $\beta$ using the recent supernovae data, Hubble data set of 77 points, and their joint data which predicts the accelerated expanding phase of the universe in late times. The effective equation of state parameter ${\omega }_{eff}$ speculate $\Lambda$CDM in late times. Finally, we use the statefinder diagnostic to differentiate our model from the various dark energy models.

arXiv comment14 pages, 14 figures

References in corpus (33)

• emcee: The MCMC Hammer
• Dynamics of dark energy
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Modified gravity with negative and positive powers of the curvature: unification of the inflation and of the cosmic acceleration
• Statefinder -- a new geometrical diagnostic of dark energy
• Disappearing cosmological constant in f(R) gravity
• Extra force in $f(R)$ modified theories of gravity
• Coincident General Relativity
• Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
• Class of viable modified $f(R)$ gravities describing inflation and the onset of accelerated expansion
• Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
• Unifying inflation with LambdaCDM epoch in modified f(R) gravity consistent with Solar System tests
• Are f(R) dark energy models cosmologically viable ?
• Modified f(R) gravity unifying R^m inflation with \LambdaCDM epoch
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• $f(Q,T)$ gravity
• Modified gravity with arbitrary coupling between matter and geometry
• Solar system and equivalence principle constraints on f(R) gravity by chameleon approach
• Energy conditions in f(R)-gravity
• Phantom crossing, equation-of-state singularities, and local gravity constraints in f(R) models
• Cosmography of f(R) gravity
• Local determination of the Hubble constant and the deceleration parameter
• Energy Conditions in $f(Q)$ gravity
• Solar System experiments do not yet veto modified gravity models
• The behavior of $f(R)$ gravity in the solar system, galaxies and clusters
• Constraining $f(Q,T)$ gravity from energy conditions
• A complete cosmological scenario from $f(R,T^{\phi })$ gravity theory
• Constraining f(R) gravity in solar system, cosmology and binary pulsar systems
• Reconstructing the inflationary $f(R)$ from observations
• Cosmic Transit and Anisotropic Models in f(R,T) Gravity
• FLRW cosmology with EDSFD parametrization
• LyST: a Scalar-Tensor Theory of Gravity on Lyra Manifold

Cited by in corpus (3)

• A constrained cosmological model in $f(R,L_m)$ gravity
• New parametrization of the dark-energy equation of state with a single parameter
• Observational Constraints and Cosmographic Analysis of $f(T,T_G)$ Gravity and Cosmology