Signatures of Initial State Modifications on Bispectrum Statistics

  title={Signatures of Initial State Modifications on Bispectrum Statistics},
  author={P. Daniel Meerburg and J. van der Schaar and Pier Stefano Corasaniti},
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


Publications referenced by this paper.
Showing 1-10 of 56 references

Extracting new physics from the CMB

  • B. Greene, K. Schalm, J. P. van der Schaar, G. Shiu
  • the Proceedings of 22nd Texas Symposium on…
  • 2004
Highly Influential
5 Excerpts

A generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation

  • R. Easther, B. R. Greene, W. H. Kinney, G. Shiu
  • Phys. Rev. D 66 (2002) 023518 [arXiv:hep-th…
  • 2002
Highly Influential
8 Excerpts

Acoustic signatures in the primary microwave background bispectrum

  • E. Komatsu, D. N. Spergel
  • Phys. Rev. D 63, 063002 (2001) [arXiv:astro-ph…
  • 2001
Highly Influential
4 Excerpts

Similar Papers

Loading similar papers…