25 citations · 25 across the 1 of their papers we have counts for
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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…
Modelling non-dust fluids in cosmology
Adam J. Christopherson, J. C. Hidalgo, Karim A. Malik
Currently, most of the numerical simulations of structure formation use Newtonian gravity. When modelling pressureless dark matter, or `dust', this approach gives the correct resul…
Estimating the amount of vorticity generated by cosmological perturbations in the early universe
Adam J. Christopherson, Karim A. Malik, David R. Matravers
We estimate the amount of vorticity generated at second order in cosmological perturbation theory from the coupling between first order energy density and non-adiabatic pressure, o…