Loop corrections to primordial non-Gaussianity

被引：2

作者：

Boran, Sibel ^{[1
]}

Kahya, E. O. ^{[1
]}

机构：

[1] Istanbul Tech Univ, Dept Phys, TR-34469 Istanbul, Turkey

来源：

PHYSICAL REVIEW D | 2018年 / 97卷 / 04期

关键词：

INFLATIONARY UNIVERSE; FLATNESS; HORIZON; FIELD;

D O I：

10.1103/PhysRevD.97.043507

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss quantum gravitational loop effects to observable quantities such as curvature power spectrum and primordial non-Gaussianity of cosmic microwave background (CMB) radiation. We first review the previously shown case where one gets a time dependence for zeta-zeta correlator due to loop corrections. Then we investigate the effect of loop corrections to primordial non-Gaussianity of CMB. We conclude that, even with a single scalar inflaton, one might get a huge value for non-Gaussianity which would exceed the observed value by at least 30 orders of magnitude. Finally we discuss the consequences of this result for scalar driven inflationary models.

引用

页数：7

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