401 citations · 3.9k across the 71 of their papers we have counts for
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astro-ph.CO2011★ 71 cited
Primordial fluctuations and non-Gaussianities from multifield DBI Galileon inflation
Sebastien Renaux-Petel, Shuntaro Mizuno, Kazuya Koyama
We study a cosmological scenario in which the DBI action governing the motion of a D3-brane in a higher-dimensional spacetime is supplemented with an induced gravity term. The latt…
astro-ph.CO2011★ 34 cited
On the redundancy of operators and the bispectrum in the most general second-order scalar-tensor theory
Sebastien Renaux-Petel
In this short note we explain how to use the linear equation of motions to simplify the third-order action for the cosmological fluctuations. No field redefinition is needed in thi…
astro-ph.CO2011★ 21 cited
Orthogonal non-Gaussianities from Dirac-Born-Infeld Galileon inflation
Sebastien Renaux-Petel
We study the cosmology of the multifield relativistic Galileon model in which an induced gravity term is added to the Dirac-Born-Infeld action. We highlight the physical insight th…