Primordial features from ekpyrotic bounces
  Certain features in the primordial scalar power spectrum are known to improve
the fit to the cosmological data. We examine whether bouncing scenarios can
remain viable if future data confirm the presence of such features. In
inflation, the fact that the trajectory is an attractor permits the generation
of features. However, bouncing scenarios often require fine tuned initial
conditions, and it is only the ekpyrotic models that allow attractors. We
demonstrate, for the first time, that ekpyrotic scenarios can generate specific
features that have been considered in the context of inflation.
