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arXiv · 0905.4925

Trans-Planckian enhancements of the primordial non-Gaussianities

Hael Collins·R. Holman
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Abstract

This article examines how breaking a Lorentz-invariant description of nature at tiny space-time intervals would affect the non-Gaussian character of the pattern of primordial perturbations left by inflation. We specifically study a set of irrelevant operators that preserve the spatial symmetries of the usual inflationary background. The non-Gaussian component in the primordial fluctuations can be much larger than the usual, small, inflationary prediction and can thus lead to much stronger constraints on the role of "trans-Planckian" physics in inflation than those from the measurements of the primordial power spectrum.

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Hael Collins, R. Holman. 2009-05-29. Trans-Planckian enhancements of the primordial non-Gaussianities. https://doi.org/10.1103/physrevd.80.043524

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