Cosmic evolution of dark energy in a generalized Rastall gravity
arXiv:2006.03229 · doi:10.1140/epjc/s10052-020-8116-2
Abstract
In this work, we propose a scheme for cosmic evolution in a generalized Rastall gravity. In our approach, the role of dark energy is taken by the non-conserved sector of the stress energy-momentum tensor. The resultant cosmic evolution is found to naturally consists of three stages, namely, radiation dominated, ordinary matter dominated, as well as dark energy and dark matter dominated eras. Furthermore, for the present model, it is demonstrated that the eventual fate of the Universe is mostly insensitive to the initial conditions, in contrast to the standard CDM model. In particular, the solution displays the properties of a dynamic attractor, which is reminiscent of quintessence and k-essence models. Subsequently, the cosmic coincidence problem is averted. The amount of deviation from a conserved stress energy-momentum tensor is shown to be more remarkable during the period when the dark energy evolves more rapidly. On the other hand, the conservation law is largely restored for the infinite past and future. The implications of the present approach are addressed.
arXiv commentAccepted by the European Physical Journal C
References in corpus (48)
- Dynamics of dark energy
- f(R) theories
- Cosmological Imprint of an Energy Component with General Equation of State
- Cosmological Constant - the Weight of the Vacuum
- f(R,T) gravity
- Quantum Gravity at a Lifshitz Point
- An alternative to quintessence
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
- A Model of Holographic Dark Energy
- Planck 2013 results. I. Overview of products and scientific results
- Metric-Affine Gauge Theory of Gravity: Field Equations, Noether Identities, World Spinors, and Breaking of Dilation Invariance
- Effective Field Theory, Black Holes, and the Cosmological Constant
- Modified Gauss-Bonnet theory as gravitational alternative for dark energy
- Tachyon Matter
- Quantum deSitter cosmology and phantom matter
- Entropy Bounds and Dark Energy
- Dark Energy
- Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point
- Transition of the dark energy equation of state in an interacting holographic dark energy model
- A Dark Energy Model Characterized by the Age of the Universe
- A New Model of Agegraphic Dark Energy
- Einstein and Rastall Theories of Gravitation in Comparison
- Rastall Cosmology and the ΛCDM Model
- Black Hole Solutions Surrounded by Perfect Fluid in Rastall Theory
- Scale invariance, new inflation and decaying Lambda terms
- A Generalization to the Rastall Theory and Cosmic Eras
- Rotating black hole in Rastall theory
- Black Hole Solutions in Rastall Theory
- Thermodynamics of Black Holes in Rastall Gravity
- Kerr-Newman-AdS Black Hole Surrounded by Perfect Fluid Matter in Rastall Gravity
- Note on the Evolution of the Gravitational Potential in Rastall Scalar Field Theories
- The Principle of Non-Gravitating Vacuum Energy and some of its consequences
- Rastall cosmology
- Observational constraints on Rastall's cosmology
- Static, spherically symmetric solutions with a scalar field in Rastall gravity
- Einstein Static Universe in Rastall Theory of Gravity
- Cosmological consequences in the framework of generalized Rastall theory of gravity
- Emergent cosmic space in Rastall theory
- Neutral regular black hole solution in generalized Rastall gravity
- Interacting Diffusive Unified Dark Energy and Dark Matter from Scalar Fields
- Gaussian black holes in Rastall Gravity
- Post-Newtonian approximations in the Hořava-Lifshitz gravity with extra U(1) symmetry
- A kinetic theory of diffusion in general relativity with cosmological scalar field
- Unification of DE-DM from Diffusive Cosmology
- On strong coupling in nonrelativistic general covariant theory of gravity
- Higher dimensional power-Maxwell charged black holes in Einstein and Rastall gravity
- Duality between k-essence and Rastall gravity
Cited by in corpus (18)
- Generalized Rastall's gravity and its effects on compact objects
- Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
- Implications of the Conformal Constraint on Sound Speed on the Radius of PSR J0952-0607 within Rastall Gravity
- Compact stars in Rastall gravity: hydrostatic equilibrium and radial pulsations
- Rapidly rotating compact stars in Rastall's gravity
- Cosmological implications of Rastall- theory
- Quadratic Rastall Gravity: from low-mass HESS J1731-347 to high-mass PSR J0952-0607 pulsars
- Dynamical systems of cosmological models for different possibilities of and
- Effects of Rastall parameter on perturbation of dark sectors of the Universe
- Analytical solutions of the geodesic equation in the space-time of a black hole surrounded by perfect fluid in Rastall theory
- Einstein Static Universe and its Stability in Generalized Rastall Gravity
- Qusinormal oscillations and late-time tail of massless scalar perturbations of a magnetized black hole in Rastall gravity
- Dynamics of k-essence in loop quantum cosmology
- Non-Singular Collapse Scenario From Matter-Curvature Coupling
- Wormhole solutions in generalized Rastall gravity
- Non-minimal coupling inspires the Dirac cosmological model
- Neutrino Interactions with perturbed Rastall Gravity: A Novel Approach to Reducing the Hubble Tension
- Primordial Black Hole Formation in Rastall Gravity: Shifted Collapse Threshold and Exponential Abundance Sensitivity