# The anamorphic universe

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

To refer to this page use: http://arks.princeton.edu/ark:/88435/pr1710h
DC FieldValueLanguage
dc.contributor.authorIjjas, Anna-
dc.contributor.authorSteinhardt, Paul J.-
dc.date.accessioned2019-03-27T18:43:36Z-
dc.date.available2019-03-27T18:43:36Z-
dc.date.issued2015-10en_US
dc.identifier.citationIjjas, Anna, Steinhardt, Paul J. (2015). The anamorphic universe. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 10.1088/1475-7516/2015/10/001en_US
dc.identifier.issn1475-7516-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1710h-
dc.description.abstractWe 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.en_US
dc.language.isoen_USen_US
dc.relation.ispartofJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICSen_US
dc.rightsAuthor's manuscripten_US
dc.titleThe anamorphic universeen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1088/1475-7516/2015/10/001-
dc.date.eissued2015-10-01en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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