Dynamics of Cosmological Perturbations and Reheating in the Anamorphic Universe
arXiv:1701.02654 · doi:10.1088/1475-7516/2017/04/004
Abstract
We discuss scalar-tensor realizations of the Anamorphic cosmological scenario recently proposed by Ijjas and Steinhardt. Through an analysis of the dynamics of cosmological perturbations we obtain constraints on the parameters of the model. We also study gravitational Parker particle production in the contracting Anamorphic phase and we compute the fraction between the energy density of created particles at the end of the phase and the background energy density. We find that, as in the case of inflation, a new mechanism is required to reheat the universe.
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- Constraining the Break of Spatial Diffeomorphism Invariance with Planck Data
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- Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime
- Bouncing and collapsing universes dual to late-time cosmological models