136 citations · 359 across the 17 of their papers we have counts for
4 papers · 1 filter
Non-Gaussianity in DHOST inflation
Philippe Brax, Andrei Lazanu
DHOST inflation models where deviations from a pure de Sitter background are induced by an axion-like potential can lead to large non-Gaussianities. We investigate the nature of no…
The reach of next-to-leading-order perturbation theory for the matter bispectrum
Davit Alkhanishvili, Cristiano Porciani, Emiliano Sefusatti +4
We provide a comparison between the matter bispectrum derived with different flavours of perturbation theory at next-to-leading order and measurements from an unprecedentedly large…
Scale-dependence in DHOST inflation
Philippe Brax, Andrei Lazanu
We study the inflationary consequences of Degenerate Higher Order Scalar Tensor (DHOST) theories in a de Sitter background. We perturb the de Sitter background by operators breakin…
Extracting cosmological parameters from N-body simulations using machine learning techniques
Andrei Lazanu
We make use of snapshots taken from the Quijote suite of simulations, consisting of 2000 simulations where five cosmological parameters have been varied (, , , a…