30 citations · 60 across the 8 of their papers we have counts for
4 papers · 1 filter
How Dilatation Invariance Suppresses Loop Corrections to Curvature Perturbations on CMB Scales
Danilo Artigas, Shi Pi, Takahiro Tanaka +1
Departures from standard slow-roll (SR) inflation have attracted increasing interest in recent years. In particular, scenarios that strongly enhance the power spectrum of the curva…
On the Hamilton-Jacobi approach to inflation beyond slow roll
Danilo Artigas, Emmanuel Frion, Tays Miranda +2
The Hamilton-Jacobi approach is a powerful tool to describe super-Hubble dynamics during cosmological inflation in a non-linear way. A key assumption of this framework is to neglec…
Extended formalism: Nonspatially Flat Separate Universe Approach
Danilo Artigas, Shi Pi, Takahiro Tanaka
The formalism is a powerful approach to compute non-linearly the large-scale evolution of the comoving curvature perturbation . It assumes a set of FLRW patches that evolve…
Hamiltonian formalism for cosmological perturbations: the separate-universe approach
Danilo Artigas, Julien Grain, Vincent Vennin
The separate-universe approach provides an effective description of cosmological perturbations at large scales, where the universe can be described by an ensemble of independent, l…