Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory
arXiv:1908.04258 · doi:10.1134/S0021364019200013
Abstract
In general, to avoid a singularity in cosmological models involves the introduction of exotic kind of matter fields, for example, a scalar field with negative energy density. In order to have a bouncing solution in classical General Relativity, violation of the energy conditions is required. In this work, we discuss a case of the bouncing solution in the Brans-Dicke theory with radiative fluid that obeys the energy conditions, and with no ghosts.
arXiv comment5 pages, 2 figures, accepted for publication in JETP Letters
References in corpus (15)
- String Solitons
- Horndeski theory and beyond: a review
- The Behaviour Of Cosmological Models With Varying-G
- Decaying Gravity
- Transformations between Jordan and Einstein frames: Bounces, antigravity, and crossing singularities
- Anisotropic Scalar-Tensor Cosmologies
- Simplest cosmological model with the scalar field
- Scalar-tensor gravity and conformal continuations
- Classical and Quantum Solutions in Brans-Dicke Cosmology with a Perfect Fluid
- Large Adiabatic Scalar Perturbations in a Regular Bouncing Universe
- Affine quantisation of the Brans-Dicke theory: Smooth bouncing and the equivalence between the Einstein and Jordan frames
- Wormholes and Naked Singularities in Brans-Dicke cosmology
- Stiff Matter Solution in Brans-Dicke Theory and The General Relativity Limit
- Density Perturbations in the Brans-Dicke Theory
- Spacetime Singularities in Generalized Brans-Dicke Theories