401 citations · 3.9k across the 71 of their papers we have counts for
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hep-th2009★ 55 cited
Combined local and equilateral non-Gaussianities from multifield DBI inflation
Sébastien Renaux-Petel
We study multifield aspects of Dirac-Born-Infeld (DBI) inflation. More specifically, we consider an inflationary phase driven by the radial motion of a D-brane in a conical throat…
hep-th2009★ 67 cited
Multifield Cosmological Perturbations at Third Order and the Ekpyrotic Trispectrum
Jean-Luc Lehners, Sébastien Renaux-Petel
Using the covariant formalism, we derive the equations of motion for adiabatic and entropy perturbations at third order in perturbation theory for cosmological models involving two…
hep-th2009★ 63 cited
Multi-field DBI inflation: introducing bulk forms and revisiting the gravitational wave constraints
David Langlois, Sebastien Renaux-Petel, Daniele A. Steer
We study multi-field Dirac-Born-Infeld (DBI) inflation models, taking into account the NS-NS and R-R bulk fields present in generic flux compactifications. We compute the second-or…