A cyclic model of the universe

Paul J. Steinhardt, Neil Turok

Research output: Contribution to journalArticlepeer-review

411 Scopus citations


We propose a cosmological model in which the universe undergoes an endless sequence of cosmic epochs that begin with a "bang" and end in a "crunch," Temperature and density at the transition remain finite. Instead of having an inflationary epoch, each cycle includes a period of slow accelerated expansion (as recently observed) followed by contraction that produces the homogeneity, flatness, and energy needed to begin the next cycle.

Original languageEnglish (US)
Pages (from-to)1436-1439
Number of pages4
Issue number5572
StatePublished - May 24 2002

All Science Journal Classification (ASJC) codes

  • General


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