# Generating Scale-Invariant Perturbations from Rapidly-Evolving Equation of State

@article{Khoury2011GeneratingSP, title={Generating Scale-Invariant Perturbations from Rapidly-Evolving Equation of State}, author={Justin Khoury and Paul J. Steinhardt}, journal={Physical Review D}, year={2011}, volume={83}, pages={123502} }

Recently, we introduced an ekpyrotic model based on a single, canonical scalar field that generates nearly scale-invariant curvature fluctuations through a purely ''adiabatic mechanism'' in which the background evolution is a dynamical attractor. Despite the starkly different physical mechanism for generating fluctuations, the two-point function is identical to inflation. In this paper, we further explore this concept, focusing in particular on issues of non-Gaussianity and quantum corrections…

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