Tensor non-Gaussianities from Non-minimal Coupling to the Inflaton

Abstract
Tensor non-Gaussianity represents an important future probe of the physics of inflation. Inspired by recent works, we elaborate further on the possibility of significant primordial tensor non-Gaussianities sourced by extra fields during inflation. Unitarity constraints limit the impact of extra (spinning) particle content by means of a lower bound on the corresponding mass spectrum. For spin-2 particles, this takes the form of the well-known...
Paper Details
Title
Tensor non-Gaussianities from Non-minimal Coupling to the Inflaton
Published Date
Oct 20, 2018
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