Emergent universe in chameleon, f(R) and f(T) gravity theories

Abstract

In this work, we consider an emergent universe in generalized gravity theories like the chameleon, f(R) and f(T) gravities. We reconstruct the potential of the chameleon field under the emergent scenario of the universe and observe its increasing nature with the evolution of the universe. We reveal that in the emergent universe scenario, the equation-of-state parameter behaves like quintessence in the case of f(R) gravity and like phantom in the case of f(T) gravity.

International Journal of Modern Physics D, 2011

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Cited by in corpus (17)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Good and bad tetrads in f(T) gravity
• Solar system constraints on f(T) gravity
• Exact charged black-hole solutions in D-dimensional f(T) gravity: torsion vs curvature analysis
• Anisotropic Universe Models in f(T) Gravity
• Energy conditions bounds on f(T) gravity
• Attractor Solutions in f(T) Cosmology
• Scalar Tensor Teleparallel Dark Gravity via Noether Symmetry
• Statefinder Analysis of f(T) Cosmology
• Finite-time future singularities models in $f(T)$ gravity and the effects of viscosity
• Teleparallel dark energy model with a fermionic field via Noether symmetry
• Gödel-type universes in f(T) gravity
• Generalized second law of thermodynamics in QCD ghost f(G) gravity
• Chameleon stars supported by a cosmological scalar field
• Emergent universe: tensor perturbations within the CSL framework
• Emergent universe revisited through the CSL theory
• The generalized second law of thermodynamics in f(R) gravity for various choices of scale factor