87 citations · 354 across the 10 of their papers we have counts for
13 papers
Revisiting isocurvature bounds in models unifying the axion with the inflaton
Guillermo Ballesteros, Andreas Ringwald, Carlos Tamarit +1
Axion scenarios in which the spontaneous breaking of the Peccei-Quinn symmetry takes place before or during inflation, and in which axion dark matter arises from the misalignment m…
dNNsolve: an efficient NN-based PDE solver
Veronica Guidetti, Francesco Muia, Yvette Welling +1
Neural Networks (NNs) can be used to solve Ordinary and Partial Differential Equations (ODEs and PDEs) by redefining the question as an optimization problem. The objective function…
Harmonic Hybrid Inflation
Federico Carta, Nicole Righi, Yvette Welling +1
We present a mechanism for realizing hybrid inflation using two axion fields with a purely non-perturbatively generated scalar potential. The structure of scalar potential is highl…
Resonant backreaction in axion inflation
Valerie Domcke, Veronica Guidetti, Yvette Welling +1
Axion inflation entails a coupling of the inflaton field to gauge fields through the Chern-Simons term. This results in a strong gauge field production during inflation, which back…
A simple, exact, model of quasi-single field inflation
Yvette Welling
In this note we present a simple but exact model of quasi-single field inflation \cite{Chen:2009zp, Chen:2009we}, in which the couplings between perturbations are completely contro…
Orbital Inflation: inflating along an angular isometry of field space
Ana Achucarro, Yvette Welling
The simplicity of the CMB data, so well described by single-field inflation, raises the question whether there might be an equally simple multi-field realization consistent with th…