201 citations · 1.8k across the 54 of their papers we have counts for
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Quantitative bispectra from multifield inflation
G. I. Rigopoulos, E. P. S. Shellard, B. J. W. van Tent
After simplifying and improving the non-Gaussian formalism we developed in previous work, we derive a quantitative expression for the three-point correlator (bispectrum) of the cur…
Large non-Gaussianity in multiple-field inflation
G. I. Rigopoulos, E. P. S. Shellard, B. J. W. van Tent
We investigate non-Gaussianity in general multiple-field inflation using the formalism we developed in earlier papers. We use a perturbative expansion of the non-linear equations t…
Non-linear perturbations in multiple-field inflation
G. I. Rigopoulos, E. P. S. Shellard, B. J. W. van Tent
We develop a non-linear framework for describing long-wavelength perturbations in multiple-field inflation. The basic variables describing inhomogeneities are defined in a non-pert…