Running non-Gaussianities in Dirac-Born-Infeld inflation

被引：173

作者：

Chen, XG ^{[1
]}

机构：

[1] Univ Florida, Dept Phys, Inst Fundamental Theory, Gainesville, FL 32611 USA

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.72.123518

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the non-Gaussianity in the simplest infrared model of the Dirac-Born-Infeld (DBI) inflation. We show that the non-Gaussianity in such a model is compatible with the current observational bound and is within the sensitivity of future experiments. We also discuss the scale dependence of the non-Gaussianity. In DBI inflation, such a feature can be used as a probe to the properties of the background geometry of the extra dimensions or internal space.

引用

页数：7

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