201 citations · 691 across the 6 of their papers we have counts for
6 papers
Quantum Corrections to the Cosmological Evolution of Conformally Coupled Fields
Jose A. R. Cembranos, Keith A. Olive, Marco Peloso +1
Because the source term for the equations of motion of a conformally coupled scalar field, such as the dilaton, is given by the trace of the matter energy momentum tensor, it is co…
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…
Predictions from an anisotropic inflationary era
Cyril Pitrou, Thiago S. Pereira, Jean-Philippe Uzan
This article investigates the predictions of an inflationary phase starting from a homogeneous and anisotropic universe of the Bianchi I type. After discussing the evolution of the…
Time drift of cosmological redshifts as a test of the Copernican principle
Jean-Philippe Uzan, Chris Clarkson, George F. R. Ellis
We present the time drift of the cosmological redshift in a general spherically symmetric spacetime. We demonstrate that its observation would allow us to test the Copernican princ…
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…
Theory of cosmological perturbations in an anisotropic universe
Thiago S. Pereira, Cyril Pitrou, Jean-Philippe Uzan
This article describes the theory of cosmological perturbations around a homogeneous and anisotropic universe of the Bianchi I type. Starting from a general parameterisation of the…