期刊
PHYSICAL REVIEW D
卷 80, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.043524
关键词
-
资金
- DOE [DE-FG0391-ER40682]
- Niels Bohr International Academy
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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