699 citations · 6.2k across the 108 of their papers we have counts for
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Universal Non-Gaussian Signatures from Transient Instabilities
Shuntaro Aoki, Diederik Roest, Denis Werth
We identify universal signatures in the bispectrum arising from a transient tachyonic instability of entropic fluctuations during inflation, a phenomenon that naturally arises in h…
Post-inflationary enhancement of adiabatic perturbations in modular cosmology
Rodrigo Gonzalez Quaglia, Martino Michelotti, Diederik Roest +3
We show that multi-field inflationary models with negligible turning in field space during inflation can lead to an effective sourcing of adiabatic from entropic perturbations {\it…
Kinetic Gauge Friction in Natural Inflation
Martino Michelotti, Rodrigo Gonzalez Quaglia, Ema Dimastrogiovanni +2
We study an extension of the natural inflation model comprising a non-Abelian gauge sector coupled to the axion-inflaton kinetic term. We show how such non-minimal coupling serves…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Many-field Inflation: Universality or Prior Dependence?
Perseas Christodoulidis, Diederik Roest, Robert Rosati
We investigate the observational signatures of many-field inflation and present analytic expressions for the spectral index as a function of the prior. For a given prior we employ…
The Hubble Flow of Plateau Inflation
Dries Coone, Diederik Roest, Vincent Vennin
In the absence of CMB precision measurements, a Taylor expansion has often been invoked to parametrize the Hubble flow function during inflation. The standard "horizon flow" proced…