CMB lensing and primordial squeezed non-gaussianity

@article{Pearson2012CMBLA,
  title={CMB lensing and primordial squeezed non-gaussianity},
  author={Ruth Pearson and Antony Lewis and Donough Regan},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2012},
  volume={2012},
  pages={011-011}
}
  • Ruth Pearson, Antony Lewis, Donough Regan
  • Published 2012
  • Physics
  • Journal of Cosmology and Astroparticle Physics
  • Squeezed primordial non-Gaussianity can strongly constrain early-universe physics, but it can only be observed on the CMB after it has been gravitationally lensed. We give a new simple non-perturbative prescription for accurately calculating the effect of lensing on any squeezed primordial bispectrum shape, and test it with simulations. We give the generalization to polarization bispectra, and discuss the effect of lensing on the trispectrum. We explain why neglecting the lensing smoothing… CONTINUE READING

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