# A Cyclic Model of the Universe

@article{Steinhardt2002ACM,
title={A Cyclic Model of the Universe},
author={Paul J. Steinhardt and Neil Turok},
journal={Science},
year={2002},
volume={296},
pages={1436 - 1439}
}
• Published 4 November 2001
• Physics
• Science
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.
491 Citations

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