Dissipative universe-inflation with soft singularity

被引：19

作者：

Brevik, Iver ^{[1
]}

Timoshkin, Alexander V. ^{[2
,3
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway

[2] Tomsk State Pedag Univ, Kievskaja St 60, Tomsk 634050, Russia

[3] Tomsk State Univ, Control Syst & Radioelect, Lenin Ave 40, Tomsk 634050, Russia

来源：

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2017年 / 14卷 / 04期

关键词：

Inflationary universe; dissipative universe; singularity; equation of state; DARK ENERGY UNIVERSE; MODIFIED GRAVITY; MATTER; FLUID; COSMOLOGY; ACCELERATION; MODELS; STATE;

D O I：

10.1142/S021988781750061X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the early-time accelerated universe after the Big Bang. We pay attention to the dissipative properties of the inflationary universe in the presence of a soft type singularity, making use of the parameters of the generalized equation of state of the fluid. Flat Friedmann-Robertson-Walker metric is being used. We consider cosmological models leading to the so-called type IV singular inflation. Our obtained theoretical results are compared with observational data from the Planck satellite. The theoretical predictions for the spectral index turn out to be in agreement with the data, while for the scalar-to-tensor ratio, there are minor deviations.

引用

页数：10

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