Strongly Scale-dependent Non-Gaussianity

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We discuss models of primordial density perturbations where the non-Gaussianity is strongly scale-dependent. In particular, the non-Gaussianity may have a sharp cut-off and be very suppressed on large cosmological scales, but sizeable on small scales. This may have an impact on probes of non-Gaussianity in the large-scale structure and in the cosmic microwave background radiation anisotropies.
StatePublished - 15 Sep 2010

    Research areas

  • astro-ph.CO, hep-ph, hep-th