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  1. Using the consistency relation in Fourier space, we derive the observed galaxy bispectrum from single-field inflation in the squeezed limit, in which one of the three modes has a wavelength much longer than the other two. This provides a non-trivial check of the full computation of the bispectrum based on second-order cosmological perturbation theory in this limit. We show that gauge modes ...
  2. artscimedia.case.edu

    The observed galaxy bispectrum from single-field inflation in the squeezed limit Kazuya Koyama University of Portsmouth. ... the squeezed limit •Full observed galaxy bispectrum The second order projection effects need to be included in a 2nd order code such as SONG. 2nd order CMB Pettinari, Fidler, Crittenden, ...
  3. researchgate.net

    Using the consistency relation in Fourier space, we derive the observed galaxy bispectrum from single-field inflation in the squeezed limit, in which one of the three modes has a wavelength much ...
  4. researchportal.port.ac.uk

    This provides a non-trivial check of the full computation of the bispectrum based on second-order cosmological perturbation theory in this limit. We show that gauge modes need to be carefully removed in the second-order cosmological perturbations in order to calculate the observed galaxy bispectrum in the squeezed limit.
  5. journals.aps.org

    the squeezed limit of the primordial curvature bispectrum. In single field, slow-roll, models of inflation, local PNG are, for all practical purposes, negligible [6-8], therefore this entire class of models can be ruled out by a detection. Conversely, multifield models of inflation generically predict large local PNG [1,7], and are thus ...
  6. semanticscholar.org

    Figure 2. Redshift dependence of the effective non-Gaussianity due to relativistic light-cone effects, for various values of b0. - "The observed galaxy bispectrum from single-field inflation in the squeezed limit"
  7. link.aps.org

    We develop an integral form for the bispectrum in general single-field inflation whose domain of validity includes models of inflation where the background evolution is not constrained to be slowly varying everywhere. Our integral form preserves the squeezed-limit consistency relation, allows for fast evaluation of the bispectrum for all triangle configurations expediting the efficient ...
  8. ui.adsabs.harvard.edu

    Using the consistency relation in Fourier space, we derive the observed galaxy bispectrum from single-field inflation in the squeezed limit, in which one of the three modes has a wavelength much longer than the other two. This provides a non-trivial check of the full computation of the bispectrum based on second-order cosmological perturbation theory in this limit.

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