Approximate Consistency Condition from Running Spectral Index in Slow-Roll Inflationary Models

@inproceedings{Chung2005ApproximateCC,
  title={Approximate Consistency Condition from Running Spectral Index in Slow-Roll Inflationary Models},
  author={Daniel J. H. Chung and Antonio Enea Romano},
  year={2005}
}
Density perturbations generated from inflation almost always have a spectral index ns which runs (varies with the wavelength). We explore a running spectral index scenario in which the scalar spectral index runs from blue (ns > 1) on large length scales to red (ns < 1) on short length scales. Specifically, we look for a correlation between the length scale at which ns − 1 = 0 and the length scale at which tensor to scalar ratio T /S reaches a minimum for single field slow roll inflationary… CONTINUE READING

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