162 citations · 518 across the 6 of their papers we have counts for
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hep-th2007★ 111 cited
Non-Gaussianities from ekpyrotic collapse with multiple fields
Kazuya Koyama, Shuntaro Mizuno, Filippo Vernizzi +1
We compute the non-Gaussianity of the curvature perturbation generated by ekpyrotic collapse with multiple fields. The transition from the multi-field scaling solution to a single-…
hep-th2007★ 70 cited
Curvature perturbations from ekpyrotic collapse with multiple fields
Kazuya Koyama, Shuntaro Mizuno, David Wands
A scale-invariant spectrum of isocurvature perturbations is generated during collapse in the ekpyrotic scaling solution in models where multiple fields have steep negative exponent…