33 citations · 42 across the 2 of their papers we have counts for
2 papers
gr-qc2007★ 33 cited
Gauge invariant Boltzmann equation and the fluid limit
Cyril Pitrou
This article investigates the collisionless Boltzmann equation up to second order in the cosmological perturbations. It describes the gauge dependence of the distribution function…
gr-qc2007★ 9 cited
Quantization of perturbations during inflation in the 1+3 covariant formalism
Cyril Pitrou, Jean-Philippe Uzan
This note derives the analogue of the Mukhanov-Sasaki variables both for scalar and tensor perturbations in the 1+3 covariant formalism. The possibility of generalizing them to non…