Plateau inflation from random non-minimal coupling

被引：5

作者：

Broy, Benedict J. ^{[1
]}

Coone, Dries ^{[2
,3
,4
]}

Roest, Diederik ^{[2
]}

机构：

[1] DESY, Theory Grp, D-22603 Hamburg, Germany

[2] Univ Groningen, Van Swinderen Inst Particle Phys & Grav, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

[3] Vrije Univ Brussel, Theoret Nat Kunde, Pleinlaan 2, B-1050 Brussels, Belgium

[4] Int Solvay Inst, Pleinlaan 2, B-1050 Brussels, Belgium

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 06期

基金：

欧洲研究理事会;

关键词：

inflation; cosmology of theories beyond the SM; modified gravity; MAPS;

D O I：

10.1088/1475-7516/2016/06/036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A generic non-minimal coupling can push any higher-order terms of the scalar potential sufficiently far out in field space to yield observationally viable plateau inflation. We provide analytic and numerical evidence that this generically happens for a non-minimal coupling strength xi of the order N-e(2). In this regime, the non-minimally coupled field is sub-Planckian during inflation and is thus protected from most higher-order terms. For larger values of the inflationary predictions converge towards the sweet spot of PLANCK. The latter includes xi similar or equal to 10(4) obtained from CMB normalization arguments, thus providing a natural explanation for the inflationary observables measured.

引用

页数：16

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