Non-Gaussianities in a two-field generalization of natural inflation

被引：11
|
作者：
Riquelme, Simon M. [1 ]
机构：
[1] Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 04期
基金：
美国国家科学基金会;
关键词：
cosmological parameters from CMBR; inflation; non-gaussianity; physics of the early universe; PERTURBATIONS; SYMMETRY; FLATNESS; UNIVERSE; HORIZON;
D O I：
10.1088/1475-7516/2018/04/027
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We describe a two-field model that generalizes natural inflation, in which the inflaton is the pseudo-Goldstone boson of an approximate symmetry that is spontaneously broken, and the radial mode is dynamical. We analyze how the dynamics fundamentally depends on the mass of the radial mode and calculate/estimate the non-Gaussianities arising from such a scenario.
引用
收藏
页数：37
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