Skip to main content

The anamorphic universe

Author(s): Ijjas, Anna; Steinhardt, Paul J.

Download
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr1710h
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.
Publication Date: Oct-2015
Electronic Publication Date: 1-Oct-2015
Citation: Ijjas, Anna, Steinhardt, Paul J. (2015). The anamorphic universe. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 10.1088/1475-7516/2015/10/001
DOI: doi:10.1088/1475-7516/2015/10/001
ISSN: 1475-7516
Type of Material: Journal Article
Journal/Proceeding Title: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Version: Author's manuscript



Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.