Designing Cyclic Universe Models

Justin Khoury, Paul J. Steinhardt, Neil Turok

Research output: Contribution to journalArticlepeer-review

133 Scopus citations


The various constraints that lie in the successful designing of a cyclic Universe model were discussed. These constraints on the steepness of the potential were found to be strongly dependent on the amplitude of the growing mode density. Only four types of constraints were found to impose any significant reductions on the cyclic model. These constraints were reduced to a set of simple design rules including slow roll parameters in inflation and fast roll parameters analogous to these soft rolls.

Original languageEnglish (US)
Article number031302
Pages (from-to)313021-313024
Number of pages4
JournalPhysical review letters
Issue number3
StatePublished - Jan 23 2004

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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