Can power spectrum observations rule out slow-roll inflation?

被引：7
作者：
Vieira, J. P. P. [1 ]
Byrnes, Christian T. [1 ]
Lewis, Antony [1 ]
机构：
[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 01期
基金：
欧洲研究理事会; 英国科学技术设施理事会;
关键词：
inflation; cosmological parameters from CMBR; COSMOLOGICAL PERTURBATIONS; CONSTRAINTS;
D O I：
10.1088/1475-7516/2018/01/019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The spectral index of scalar perturbations is an important observable that allows us to learn about inflationary physics. In particular, a detection of a significant deviation from a constant spectral index could enable us to rule out the simplest class of inflation models. We investigate whether future observations could rule out canonical single-field slow-roll inflation given the parameters allowed by current observational constraints. We find that future measurements of a constant running (or running of the running) of the spectral index over currently available scales are unlikely to achieve this. However, there remains a large region of parameter space (especially when considering the running of the running) for falsifying the assumed class of slow-roll models if future observations accurately constrain a much wider range of scales.
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页数：22
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