47 citations · 243 across the 11 of their papers we have counts for
4 papers · 2 filters
Perturbative Reheating After Multiple-Field Inflation: The Impact on Primordial Observables
Joel Meyers, Ewan R. M. Tarrant
We study the impact of perturbative reheating on primordial observables in models of multiple-field inflation. By performing a sudden decay calculation, we derive analytic expressi…
The Dark Energy Cosmic Clock: A New Way to Parametrise the Equation of State
Ewan R. M. Tarrant, Edmund J. Copeland, Antonio Padilla +1
We propose a completely new parametrisation of the dark energy equation of state, which uses the dark energy density, as a cosmic clock. We expand the equation of state in a…
Cosmological effects of coupled dark matter
Sophie C. F. Morris, Anne M. Green, Antonio Padilla +1
Many models have been studied that contain more than one species of dark matter and some of these couple the Cold Dark Matter (CDM) to a light scalar field. In doing this we introd…
Influence of Reheating on the Trispectrum and its Scale Dependence
Godfrey Leung, Ewan R. M. Tarrant, Christian T. Byrnes +1
We study the evolution of the non-linear curvature perturbation during perturbative reheating, and hence how observables evolve to their final values which we may compare against o…