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arXiv · 2601.02234

More on Pre-Inflationary Non Gaussianities

M. Meo
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Abstract

I generalize the three-point amplitude of curvature perturbations in the climbing scenario inspired by ten-dimensional non-supersymmetric strings to a broader class of exponential potentials, under some assumptions on the smoothing effects of String Theory that favor a bounce Cosmology. The extension can encompass the SO(16)xSO(16) model, together with other scenarios related to supersymmetry breaking in String Theory. The e-fold ranges compatible with Planck data move toward lower values of N for milder potentials and toward larger values for steeper ones. I also compute the three-point amplitudes involving graviton modes in the same bounce scenario, showing in detail their lack of peculiar contributions from the turning point.

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M. Meo. 2026-01-05. More on Pre-Inflationary Non Gaussianities. https://arxiv.org/abs/2601.02234

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