The anamorphic universe

Abstract

We introduce "anamorphic" cosmology, an approach for explaining the smoothness and flatness of the universe on large scales and the generation of a nearly scale-invariant spectrum of adiabatic density perturbations. The defining feature is a smoothing phase that acts like a contracting universe based on some Weyl frame-invariant criteria and an expanding universe based on other frame-invariant criteria. An advantage of the contracting aspects is that it is possible to avoid the multiverse and measure problems that arise in inflationary models. Unlike ekpyrotic models, anamorphic models can be constructed using only a single field and can generate a nearly scale-invariant spectrum of tensor perturbations. Anamorphic models also differ from pre-big bang and matter bounce models that do not explain the smoothness. We present some examples of cosmological models that incorporate an anamorphic smoothing phase.

35 pages, 3 figures, 1 table

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• A Universe Without Dark Energy: Cosmic Acceleration from Dark Matter-Baryon Interactions
• The Cosmological OTOC: Formulating new cosmological micro-canonical correlation functions for random chaotic fluctuations in Out-of-Equilibrium Quantum Statistical Field Theory
• Decoherence out of fire: Purity loss in expanding and contracting universes
• Thermodynamics of nonsingular bouncing universes
• Primordial cosmic fluctuations for variable gravity
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• Running primordial perturbations: Inflationary Dynamics and Observational Constraints
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• Einstein and Jordan frame correspondence in quantum cosmology: Expansion-collapse duality
• Testing time-delayed cosmology
• Crossing the Big Bang singularity
• Non-Minimally Coupled Inflation with Initial Conditions from a Pre-Inflation Anamorphic Contracting Era
• Cyclic completion of the anamorphic universe
• Bouncing and collapsing universes dual to late-time cosmological models
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• Non-singular Bounce from a Phase transition