87 citations · 354 across the 10 of their papers we have counts for
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astro-ph.CO2019★ 18 cited
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…
hep-th2019
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…
astro-ph.CO2019★ 44 cited
Shift-Symmetric Orbital Inflation: single field or multi-field?
Ana Achúcarro, Edmund J. Copeland, Oksana Iarygina +3
We present a new class of two-field inflationary attractor models, known as `shift-symmetric orbital inflation', whose behaviour is strongly multi-field but whose predictions are r…