Cyclic Inflation

@article{Biswas2008CyclicI,
  title={Cyclic Inflation},
  author={Tirthabir Biswas and Stephon H. S. Alexander},
  journal={Physical Review D},
  year={2008}
}
We present an inflationary model that is geodesically complete and does not suffer from the transplanckian problem. In most inflationary models, massless (conformal) scalar field fluctuations in a deSitter background gives rise to a scale-invariant spectrum. In this work, we realize scale invariant perturbations from thermal fluctuations in (conformal) radiation during a radiation dominated contraction era prior to inflation. As the modes exit the Hubble radius during the contraction phase… 

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