175 citations · 428 across the 10 of their papers we have counts for
27 papers · 1 filter
Cosmic microwave background bispectrum on small angular scales
Cyril Pitrou, Jean-Philippe Uzan, Francis Bernardeau
This article investigates the non-linear evolution of cosmological perturbations on sub-Hubble scales in order to evaluate the unavoidable deviations from Gaussianity that arise fr…
Multi-Point Propagators in Cosmological Gravitational Instability
Francis Bernardeau, Martin Crocce, Roman Scoccimarro
We introduce the concept of multi-point propagators between linear cosmic fields and their nonlinear counterparts in the context of cosmological perturbation theory. Such functions…
Propagators in Lagrangian space
Francis Bernardeau, Patrick Valageas
It has been found recently that propagators, e.g. the cross-correlation spectra of the cosmic fields with the initial density field, decay exponentially at large-k in an Eulerian d…
Time drift of cosmological redshifts and its variance
Jean-Philippe Uzan, Francis Bernardeau, Yannick Mellier
The contribution of cosmological perturbations to the time drift of the cosmological redshift is derived. It is shown that the dominant correction arises from the local acceleratio…
Models of inflation with primordial non-Gaussianities
Francis Bernardeau, Tristan Brunier, Jean-Philippe Uzan
We present a class of models in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gauss…
Explicit computation of shear three-point correlation functions: the one-halo model case
F. Bernardeau
We present a method for calculating explicit expressions of the shear three-point function for various cosmological models. The method is applied here to the one-halo model in case…