Emergent scenario in mimetic gravity
arXiv:2202.04269 · doi:10.1088/1361-6382/aba223
Abstract
The emergent scenario provides a possible way to avoid the big bang singularity by assuming that the universe originates from an Einstein static state. Therefore, an Einstein static universe stable under perturbations is crucial to a successful implementation of the emergent mechanism. In this paper, we analyze the stability of the Einstein static universe against the scalar perturbations in the mimetic theory and find that stable Einstein static solutions exist under certain conditions in this theory. In the original mimetic gravity, the Einstein static universe is unstable. Then, we find that the universe can naturally exit from the initial static state, evolve into an inflationary era and then exit from the inflationary era. Thus, the emergent scenario can be used to resolve the big bang singularity in the mimetic theory.
Published in Classical and Quantum Gravity. arXiv admin note: text overlap with arXiv:1801.04358
References in corpus (30)
- Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
- Cosmology with Mimetic Matter
- Mimetic gravity: inflation, dark energy and bounce
- Disformal Transformations, Veiled General Relativity and Mimetic Gravity
- Dynamical behavior in mimetic F(R) gravity
- Stability of the Einstein static universe in modified Gauss-Bonnet gravity
- Extended mimetic gravity: Hamiltonian analysis and gradient instabilities
- Mimetic dark matter, ghost instability and a mimetic tensor-vector-scalar gravity
- The Einstein static universe in Loop Quantum Cosmology
- Imperfect Dark Matter
- Einstein static universes are unstable in generic f(R) models
- Cosmological perturbations in mimetic matter model
- The Einstein static universe with torsion and the sign problem of the cosmological constant
- Viable Mimetic Completion of Unified Inflation-Dark Energy Evolution in Modified Gravity
- Emergent universe in a Jordan-Brans-Dicke theory
- A graceful entrance to braneworld inflation
- Emergent Universe Scenario via Quintom Matter
- Hamiltonian Formulation of Mimetic Gravity
- Charged Gravastars with Conformal Motion in f(R,T) Gravity
- Stability of the Einstein static universe in presence of vacuum energy
- On the Stability of Jordan-Brans-Dicke Static Universe
- Hamiltonian analysis of mimetic scalar gravity revisited
- Gravitational focusing of Imperfect Dark Matter
- Nuclear Statistical Equilibrium neutrino spectrum
- Oscillating universe in the DGP braneworld
- Einstein static Universe in non-minimal kinetic coupled gravity
- Induced Matter Brane Gravity and Einstein Static Universe
- Stability of the Einstein static Universe in Einstein-Cartan-Brans-Dicke gravity
- Emergent Universe Scenario, Bouncing and Cyclic Universes in Degenerate Massive Gravity
- Revisiting the cosmological bias due to local gravitational redshifts