Signatures of Initial State Modifications on Bispectrum Statistics

@inproceedings{Meerburg2009SignaturesOI,
  title={Signatures of Initial State Modifications on Bispectrum Statistics},
  author={P. Daniel Meerburg and J. van der Schaar and Pier Stefano Corasaniti},
  year={2009}
}
Modifications of the initial-state of the inflaton field can induce a departure from Gaussianity and leave a testable imprint on the higher order correlations of the CMB and large scale structures in the Universe. We focus on the bispectrum statistics of the primordial curvature perturbation and its projection on the CMB. For a canonical singlefield action the three-point correlator enhancement is localized, maximizing in the collinear limit, corresponding to enfolded or squashed triangles in… CONTINUE READING

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