443 citations · 5k across the 67 of their papers we have counts for
11 papers · 1 filter
Power-counting during single-field slow-roll inflation
Peter Adshead, C. P. Burgess, R. Holman +1
We elucidate the counting of the relevant small parameters in inflationary perturbation theory. Doing this allows for an explicit delineation of the domain of validity of the semi-…
Higgsed Gauge-flation
Peter Adshead, Evangelos I. Sfakianakis
We study a variant of Gauge-flation where the gauge symmetry is spontaneously broken by a Higgs sector. We work in the Stueckelberg limit and demonstrate that the dynamics remain (…
Higgsed Chromo-Natural Inflation
Peter Adshead, Emil Martinec, Evangelos I. Sfakianakis +1
We demonstrate that Chromo-Natural Inflation can be made consistent with observational data if the SU(2) gauge symmetry is spontaneously broken. Working in the Stueckelberg limit,…
Magnon Inflation: Slow Roll with Steep Potentials
Peter Adshead, Diego Blas, C. P. Burgess +2
We find multi-scalar effective field theories (EFTs) that can achieve a slow inflationary roll despite having a scalar potential that does not satisfy the usual slow-roll condition…
Perturbations in Chromo-Natural Inflation
Peter Adshead, Emil Martinec, Mark Wyman
Chromo-Natural Inflation is the first worked example of a model of inflation in which slow-roll inflation is achieved by "magnetic drift" as opposed to Hubble friction. In this wor…
Gauge Fields and Inflation: Chiral Gravitational Waves, Fluctuations and the Lyth Bound
Peter Adshead, Emil Martinec, Mark Wyman
Models of inflation involving non-Abelian gauge field backgrounds can produce gravitational waves at an observable level with a preferred handedness. This asymmetry comes about bec…