The Effect of Features on the Functional Form of the Scalar Power   Spectrum
  We study how the scalar power spectrum of single-scalar inflation depends functionally on models with features which have been proposed to explain anomalies in the data. We exploit a new formalism based on evolving the norm-squared of the scalar mode functions, rather than the mode functions themselves. 
D. J. Brooker (Florida), N. C. Tsamis (Crete) and R. P. Woodard   (Florida)
gr-qc astro-ph.CO hep-th