13 citations · 14 across the 7 of their papers we have counts for
5 papers · 1 filter
AI--Assisted Exploration: DHOST Theories without Quantum Ghosts
Ginevra Braga, Raul Jimenez, Sabino Matarrese
We ask whether a local symmetry can organize both classical degeneracy and perturbative stability in DHOST theories. An AI-assisted search finds a candidate in a constant-disformal…
Inflation without an Inflaton III: non-Gaussian signatures
Mariam Abdelaziz, Marisol Traforetti, Daniele Bertacca +3
We investigate primordial non-Gaussianity in the Inflation without an Inflaton (IWI) framework, where scalar perturbations are generated at second order by primordial gravitational…
Inflation without an Inflaton II: observational predictions
Marisol Traforetti, Mariam Abdelaziz, Daniele Bertacca +3
We present a complete computation of the scalar power spectrum in the \emph{inflation without inflaton} (IWI) framework, where the inflationary expansion is driven solely by a de~S…
Inflation without an Inflaton
Daniele Bertacca, Raul Jimenez, Sabino Matarrese +1
We propose a novel scenario in which scalar perturbations, that seed the large scale structure of the Universe, are generated without relying on a scalar field (the inflaton). In t…
How Gaussian can the Sky be? Primordial Non-Gaussianity from Quantum Information
Cesar Gomez, Raul Jimenez
Using the quantum information picture to describe the early universe as a time dependent quantum density matrix, with time playing the role of a stochastic variable, we compute the…