Journal
PHYSICAL REVIEW D
Volume 80, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.043524
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Funding
- DOE [DE-FG0391-ER40682]
- Niels Bohr International Academy
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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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