Cosmology with Eddington-inspired Gravity

Abstract

We study the dynamics of homogeneous, isotropic universes which are governed by the Eddington-inspired alternative theory of gravity which has a single extra parameter, $\kappa$. Previous results showing singularity-avoiding behaviour for $\kappa >0$ are found to be upheld in the case of domination by a perfect fluid with equation of state parameter $w>0$. The range $-1/3<w<0$ is found to lead to universes which experience unbounded expansion rate whilst still at a finite density. In the case $\kappa <0$ the addition of spatial curvature is shown to lead to the possibility of oscillation between two finite densities. Domination by a scalar field with an exponential potential is found to also lead to singularity-avoiding behaviour when $\kappa >0$. Certain values of the parameters governing the potential lead to behaviour in which the expansion rate of the universe changes sign several times before transitioning to regular GR-like behaviour.

13 pages, 8 figures

References in corpus (15)

• f(R) Theories Of Gravity
• Resummation of Massive Gravity
• Generalization of the Fierz-Pauli Action
• Resolving the Ghost Problem in non-Linear Massive Gravity
• Ghost-free Massive Gravity with a General Reference Metric
• Eddington's theory of gravity and its progeny
• Born-Infeld-Einstein Actions?
• Ghost free Massive Gravity in the Stückelberg language
• Compact stars in Eddington inspired gravity
• Palatini approach to Born-Infeld-Einstein theory and a geometric description of electrodynamics
• Bouncing Eddington-inspired Born-Infeld cosmologies: an alternative to Inflation ?
• Classifying and avoiding singularities in the alternative gravity dark energy models
• Eddington-inspired Born-Infeld gravity: astrophysical and cosmological constraints
• A tensor instability in the Eddington inspired Born-Infeld Theory of Gravity
• Universe Driven by Perfect Fluid in Eddington-inspired Born-Infeld Gravity

Cited by in corpus (75)

• Born-Infeld inspired modifications of gravity
• Structure of neutron, quark and exotic stars in Eddington-inspired Born-Infeld gravity
• Geonic black holes and remnants in Eddington-inspired Born-Infeld gravity
• Testing universal relations of neutron stars with a nonlinear matter-gravity coupling theory
• Lorentzian wormholes in Eddington-inspired Born-Infeld gravity
• Born-Infeld gravity and its functional extensions
• Black hole solution and strong gravitational lensing in Eddington-inspired Born-Infeld gravity
• Wormholes with nonexotic matter in Born-Infeld gravity
• Constraints on Modified Gravity Models from White Dwarfs
• Born-Infeld gravity coupled to Born-Infeld electrodynamics
• Linear perturbations in Eddington-inspired Born-Infeld gravity
• Constraints on Born-Infeld gravity from the speed of gravitational waves after GW170817 and GRB 170817A
• Cosmological perturbations in massive gravity with doubly coupled matter
• Born-Infeld-$f(R)$ gravity
• Dark matter density profile and galactic metric in Eddington-inspired Born-Infeld gravity
• Eddington-Born-Infeld cosmology: a cosmographic approach, a tale of doomsdays and the fate of bound structures
• Large Scale Structure Formation in Eddington-inspired Born-Infeld Gravity
• Modified Eddington-inspired-Born-Infeld Gravity with a Trace Term
• Precursor of Inflation
• Little Rip, $\Lambda$CDM and singular dark energy cosmology from Born-Infeld-$f(R)$ gravity
• Black hole solutions in mimetic Born-Infeld gravity
• Extended phase space thermodynamics and $P-V$ criticality: Brans-Dicke-Born-Infeld vs Einstein-Born-Infeld-dilaton black holes
• Is Eddington-Born-Infeld theory really free of cosmological singularities?
• Inner Structure of Black Holes in Eddington-inspired Born-Infeld gravity: the role of mass inflation
• Noether Identities and Gauge-Fixing the Action for Cosmological Perturbations
• Cosmological singularities in Born-Infeld determinantal gravity
• Stability of the Einstein static universe in Eddington-inspired Born-Infeld theory
• Bianchi type I cosmological models in Eddington-inspired Born-Infeld gravity
• Towards the Quantization of Eddington-inspired-Born-Infeld Theory
• Interacting spin-2 fields in the Stueckelberg picture
• Classical resolution of black hole singularities in arbitrary dimension
• Primordial Cosmology in Mimetic Born-Infeld Gravity
• Mass inflation in Eddington-inspired Born-Infeld black holes: analytical scaling solutions
• Probing Palatini-type gravity theories through gravitational wave detections via quasinormal modes
• Cascading dust inflation in Born-Infeld gravity
• Black hole solutions in functional extensions of Born-Infeld gravity
• Born-Infeld cosmology with scalar Born-Infeld matter
• Quasi-normal modes of massless scalar fields for charged black holes in the Palatini-type gravity
• A new synthesis of matter and gravity: A nongravitating scalar field
• Overcharging black holes and cosmic censorship in Eddington-inspired Born-Infeld gravity
• Three dimensional Eddington--inspired Born--Infeld gravity: solutions
• A general theory of linear cosmological perturbations: bimetric theories
• Doomsdays in a modified theory of gravity: A classical and a quantum approach
• Riemann-Eddington theory: Incorporating matter, degravitating the cosmological constant
• Kaluza Ansatz applied to Eddington inspired Born-Infeld Gravity
• Tensor-to-Scalar Ratio in Eddington-inspired Born-Infeld Inflation
• Generating Rotating Spacetime in Ricci-Based Gravity: Naked Singularity as a Black Hole Mimicker
• Probing gravity at sub-femtometer scales through the pressure distribution inside the proton
• On generalized wormhole in the Eddington inspired Born-Infeld (EiBI) gravity
• Singular Instantons in Eddington-inspired-Born-Infeld Gravity
• Inflationary Tensor Perturbation in Eddington-inspired Born-Infeld gravity
• The final state of gravitational collapse in Eddington-inspired Born-Infeld theory
• Primordial brusque bounce in Born-Infeld determinantal gravity
• Nonsingular black holes in Palatini extensions of General Relativity
• Regular Instantons in the Eddington-inspired-Born-Infeld Gravity: Lorentzian Wormholes from Bubble Nucleations
• Anisotropic deformations in a class of projectively-invariant metric-affine theories of gravity
• Motion of Spinning Particles around Electrically Charged Black Hole in Eddington-inspired Born-Infeld Gravity
• Melvin Universe in Born-Infeld gravity
• Cosmology in a reduced Born-Infeld--$f(T)$ theory of gravity
• Gravitational collapse in $(2+1)$-dimensional Eddington-inspired Born-Infeld gravity
• Scalar perturbations of Eddington-inspired Born-Infeld braneworld
• On the Consistency of the Wheeler-DeWitt Equation in the Quantized Eddington-inspired Born-Infeld Gravity
• Born-Infeld gravity with a Brans-Dicke scalar
• Origin of the universe: A hint from Eddington-inspired Born-Infeld gravity
• Constraint on dark matter central density in the Eddington inspired Born-Infeld (EiBI) gravity with input from Weyl gravity
• Primordial Power Spectra of EiBI Inflation in Strong Gravity Limit
• Anisotropic Born-Infeld-f(R) Cosmologies
• Cosmology of unimodular Born-Infeld-$f(R)$ gravity
• Threshold of primordial black hole formation in Eddington-inspired-Born-Infeld gravity
• Domain walls and other defects in Eddington-inspired Born-Infeld gravity
• Eddington-inspired-Born-Infeld tensorial instabilities neutralized in a quantum approach
• Dynamical cosmologies in Eddington-inspired-Born-Infeld theory
• Modified gravity in three dimensional metric-affine scenarios
• Born-Infeld-f(R) black holes
• Charged black holes in Eddington-inspired Born-Infeld gravity: An in-depth analysis of the structure of spacetime geometry