Designing Cyclic Universe Models

Justin Khoury; Paul J. Steinhardt; Neil Turok

doi:10.1103/PhysRevLett.92.031302

Designing Cyclic Universe Models

Justin Khoury, Paul J. Steinhardt, Neil Turok

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The phenomenological constraints on the scalar field potential in cyclic models of the Universe are presented. We show that cyclic models require a comparable degree of tuning to that needed for inflationary models. The constraints are reduced to a set of simple design rules including “fast-roll” parameters analogous to the “slow-roll” parameters in inflation.

Original language	English (US)
Pages (from-to)	4
Number of pages	1
Journal	Physical review letters
Volume	92
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.92.031302
State	Published - 2004

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.92.031302

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title = "Designing Cyclic Universe Models",

abstract = "The phenomenological constraints on the scalar field potential in cyclic models of the Universe are presented. We show that cyclic models require a comparable degree of tuning to that needed for inflationary models. The constraints are reduced to a set of simple design rules including “fast-roll” parameters analogous to the “slow-roll” parameters in inflation.",

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AB - The phenomenological constraints on the scalar field potential in cyclic models of the Universe are presented. We show that cyclic models require a comparable degree of tuning to that needed for inflationary models. The constraints are reduced to a set of simple design rules including “fast-roll” parameters analogous to the “slow-roll” parameters in inflation.

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JO - Physical review letters

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Designing Cyclic Universe Models

Abstract

All Science Journal Classification (ASJC) codes

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