70 citations · 244 across the 12 of their papers we have counts for
12 papers
Isocurvature Perturbations and Reheating in Multi-Field Inflation
Ian Huston, Adam J. Christopherson
Inflationary models involving more than one scalar field naturally produce isocurvature perturbations. However, while these are fairly well studied, less is known about their evolu…
Quantifying the behaviour of curvature perturbations near Horizon Crossing
Ellie Nalson, Adam J. Christopherson, Ian Huston +1
How much does the curvature perturbation change after it leaves the horizon, and when should one evaluate the power spectrum? To answer these questions we study single field inflat…
The Evolution of Non-adiabatic Pressure Perturbations during Multi-field Inflation
Ian Huston, Adam J. Christopherson
Non-adiabatic pressure perturbations naturally occur in models of inflation consisting of more than one scalar field. The amount of non-adiabatic pressure present at the end of inf…
Large trispectrum in two-field slow-roll inflation
Joseph Elliston, Laila Alabidi, Ian Huston +2
We calculate the conditions required to produce a large local trispectrum during two-field slow-roll inflation. This is done by extending and simplifying the 'heatmap' approach dev…
Quantifying the behaviour of curvature perturbations during inflation
Ellie Nalson, Adam J. Christopherson, Ian Huston +1
How much does the curvature perturbation change after it leaves the horizon, and when should one evaluate the power spectrum? To answer these questions we study single field inflat…
Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation
Ian Huston, Adam J. Christopherson
Isocurvature perturbations naturally occur in models of inflation consisting of more than one scalar field. In this paper we calculate the spectrum of isocurvature perturbations ge…