Stable, non-singular bouncing universe with only a scalar mode
arXiv:2005.01762 · doi:10.1103/PhysRevD.102.024080
Abstract
In this paper, we study a class of higher derivative, non-local gravity which admits homogeneous and isotropic non-singular, bouncing universes in the absence of matter. At the linearized level, the theory propagates only a scalar degree of freedom, and no vector or tensor modes. The scalar can be made free from perturbative ghost instabilities, and has oscillatory and bounded evolution across the bounce.
5 pages, 1 figure
References in corpus (33)
- The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
- The Pre-Big Bang Scenario in String Cosmology
- Towards singularity and ghost free theories of gravity
- Super-renormalizable Quantum Gravity
- Bouncing Universes in String-inspired Gravity
- Bouncing Cosmologies: Progress and Problems
- New Ekpyrotic Cosmology
- Critical Gravity in Four Dimensions
- xPert: Computer algebra for metric perturbation theory
- Towards a Resolution of the Cosmological Singularity in Non-local Higher Derivative Theories of Gravity
- Aspects of Quadratic Gravity
- Loop Quantum Cosmology: An Overview
- Stable bounce and inflation in non-local higher derivative cosmology
- Dynamics of Nonlocal Cosmology
- Generalized ghost-free quadratic curvature gravity
- Dynamics with Infinitely Many Derivatives: The Initial Value Problem
- A Matter Bounce By Means of Ghost Condensation
- Evolution of cosmological perturbations in non-singular string cosmologies
- Consistent Higher Derivative Gravitational theories with stable de Sitter and Anti-de Sitter Backgrounds
- xPand: An algorithm for perturbing homogeneous cosmologies
- Perturbations in a non-singular bouncing Universe
- On bouncing solutions in non-local gravity
- Stable analytic bounce in non-local Einstein-Gauss-Bonnet cosmology
- Cosmological vector modes and quantum gravity effects
- inflation to probe non-perturbative quantum gravity
- Nonperturbative analysis of the evolution of cosmological perturbations through a nonsingular bounce
- Nonlocal theories of gravity: the flat space propagator
- Vector Perturbations in a Contracting Universe
- Super-Inflation, Non-Singular Bounce, and Low Multipoles
- Inflation with a Weyl term, or ghosts at work
- Cosmological perturbations in non-local higher-derivative gravity
- Cosmological Solutions in Nonlocal Models
- Perturbations in higher derivative gravity beyond maximally symmetric spacetimes
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- Infinite-derivative linearized gravity in convolutional form
- Bouncing cosmology in the limiting curvature theory of gravity
- Gravitational Bounce from the Quantum Exclusion Principle
- Exact gyratons in higher and infinite derivative gravity
- Gravitational field of scalar lumps in higher-derivative gravity
- Smearing out contact terms in ghost-free infinite derivative quantum gravity
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