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Updated: Apr 21, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Mild quasilocal non-Gaussianity as a signature of modified gravity during inflation
Nicola Bartolo1, Dario Cannone1, Raul Jimenez2
1Dipartimento di Fisica e Astronomia G. Galilei, Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy.
Abstract:
We show that modifications of Einstein gravity during inflation could leave potentially measurable imprints on cosmological observables in the form of non-Gaussian perturbations. This is due to the fact that these modifications appear in the form of an extra field that could have nontrivial interactions with the inflaton. We show it explicitly for the case R+αR(2), where nearly scale-invariant non-Gaussianity at the level of f(NL) ≈ - (1 to 30) can be obtained, in a quasilocal configuration.
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