A note on non singular Einstein-Aether cosmologies

Abstract

An effective Lagrangian approach based on an extended Einstein-Aether (EA) model is presented and formulated in a generic non flat Fridman-Lemaitre-Robertson-Walker (FLRW) space-time. For a flat FLRW space-time, a Friedmann equation similar to the one obtained in Quantum Loop Cosmology (QLC) is reproduced, with related non singular bounce solution. Finally, the Static Spherically Symmetric (SSS) solutions are investigated.

arXiv comment12 pages, final version, accepted in PRD

References in corpus (49)

• Planck 2015 results. XIII. Cosmological parameters
• From k-essence to generalised Galileons
• Gravity with a dynamical preferred frame
• Strong constraints on cosmological gravity from GW170817 and GRB 170817A
• Absence of Singularity in Loop Quantum Cosmology
• Mimetic Dark Matter
• Modifying gravity with the Aether: an alternative to Dark Matter
• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
• Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations
• Cosmology with Mimetic Matter
• Dust of Dark Energy
• Towards a Resolution of the Cosmological Singularity in Non-local Higher Derivative Theories of Gravity
• Inflation in $f(R,\varphi )$-theories and mimetic gravity scenario
• Mimetic $F(R)$ gravity: inflation, dark energy and bounce
• On the recently proposed Mimetic Dark Matter
• Stable bounce and inflation in non-local higher derivative cosmology
• Disformal Transformations, Veiled General Relativity and Mimetic Gravity
• Dark energy from modified gravity with Lagrange multipliers
• Resolving Cosmological Singularities
• xPand: An algorithm for perturbing homogeneous cosmologies
• Alive and well: mimetic gravity and a higher-order extension in light of GW170817
• Mimicking dark matter and dark energy in a mimetic model compatible with GW170817
• Numerical simulations of gravitational collapse in Einstein-aether theory
• The two faces of mimetic Horndeski gravity: disformal transformations and Lagrange multiplier
• Dark matter as a ghost free conformal extension of Einstein theory
• Imperfect Dark Matter
• Extended matter bounce scenario in ghost free $f(R,\mathcal{G})$ gravity compatible with GW170817
• Cosmological perturbations in mimetic matter model
• Some Inflationary Einstein-Aether Cosmologies
• Coupling the inflaton to an expanding aether
• Effective loop quantum cosmology as a higher-derivative scalar-tensor theory
• Emergent de Sitter epoch of the Loop Quantum Cosmos: a detailed analysis
• Bouncing Universes in Scalar-Tensor Gravity Models admitting Negative Potentials
• Non-polynomial Lagrangian approach to Regular Black Holes
• Spherically symmetric static vacuum solutions in Mimetic gravity
• A note on a mimetic scalar-tensor cosmological model
• Static Spherically Symmetric Einstein-aether models II: Integrability and the Modified Tolman-Oppenheimer-Volkoff approach
• Cosmological perturbation theory in Generalized Einstein-Aether models
• Limiting curvature mimetic gravity and its relation to Loop Quantum Cosmology
• Mimetic covariant renormalizable gravity
• Einstein-aether gravity: theory and observational constraints
• Mimetic Attractors
• Existence of New Singularities in Einstein-Aether Theory
• Towards a viable effective field theory of mimetic gravity
• Reduced Lagrangians and analytic solutions in Einstein-æther Cosmology
• Extended analysis for the Evolution of the Cosmological history in Einstein-aether Scalar Field theory
• Cosmologically viable generalized Einstein-Aether theories
• Properties of fluctuating states in loop quantum cosmology
• Bouncing Universe with exotic radiation

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• Theories with limited extrinsic curvature and a nonsingular anisotropic universe
• Exact black hole solutions in Einstein-Aether Scalar field theory