The CyclicModel Simplied

The Cyclic Model Simplified∗ Paul J. Steinhardt1,2 and Neil Turok3 1Department of Physics, Princeton University, Princeton, New Jersey 08544, USA 2 School of Natural Sciences, Institute for Advanced Study, Olden Lane, Princeton, New Jersey 08540, USA 3 Centre for Mathematical Sciences, Wilberforce Road, Cambridge CB3 0WA, U.K. (Dated: April 2004) The Cyclic Model attempts to resolve the homogeneity, isotropy, and flatness problems and gen- erate a nearly scale-invariant spectrum of fluctuations during a period of slow contraction that precedes a bounce to an expanding phase.

• horizon
• contraction phase
• entropy density
• branes
• bounce
• cycle
• fluctuations
• collision
• dark energy
• inflation