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arXiv 0905.4925hep-phastro-ph.CO
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原始非高斯性的跨普朗克增强

Trans-Planckian enhancements of the primordial non-Gaussianities

Hael Collins, R. Holman

摘要:

这篇文章探讨了在微小的时空间隔上打破自然的洛伦兹不变描述将如何影响暴胀留下的原始扰动模式的非高斯特征。我们专门研究了一组不相关的运营商,保持通常的暴胀背景的空间对称性。原始涨落中的非高斯分量可能比通常的小暴胀预测大得多,因此可能导致对“trans-Planckian”物理学在暴胀中的作用的约束比原始功率谱的测量更强。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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