Trans-Planckian enhancements of the primordial non-Gaussianities

Details Trans-Planckian enhancements of the primordial non-Gaussianities Trans-Planckian enhancements of the primordial non-Gaussianities

2009-05-29

arxiv.org/abs/0905.4925v1

Phys.Rev.D80:043524,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 1 figure, uses ReVTeX

Scientific paper

10.1103/PhysRevD.80.043524

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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