211 citations · 945 across the 13 of their papers we have counts for
5 papers · 1 filter
The cosmic gravitational wave background in a cyclic universe
Latham A. Boyle, Paul J. Steinhardt, Neil Turok
Inflation predicts a primordial gravitational wave spectrum that is slightly ``red,'' i.e., nearly scale-invariant with slowly increasing power at longer wavelengths. In this paper…
Designing Cyclic Universe Models
Justin Khoury, Paul J. Steinhardt, Neil Turok
Recent advances in understanding the propagation of perturbations through the transition from big crunch to big bang (esp. Tolley et al. hep-th/0306109) make it possible for the fi…
Cosmological Perturbations in a Big Crunch/Big Bang Space-time
Andrew J. Tolley, Neil Turok, Paul J. Steinhardt
A prescription is developed for matching general relativistic perturbations across singularities of the type encountered in the ekpyrotic and cyclic scenarios i.e. a collision betw…
Inflation versus Cyclic Predictions for Spectral Tilt
Justin Khoury, Paul J. Steinhardt, Neil Turok
We present a simple, nearly model-independent estimate that yields the predictions of the simplest inflationary and ekpyrotic/cyclic models for the spectral tilt of the primordial…
Conditions for Generating Scale-Invariant Density Perturbations
Steven Gratton, Justin Khoury, Paul J. Steinhardt +1
We analyze the general conditions on the equation of state required for quantum fluctuations of a scalar field to produce a scale-invariant spectrum of density perturbations, i…