Intermediate inflation with non-canonical scalar field in the low anisotropy Universe

被引：3
作者：
Naderi, Mandieh [1 ]
Aghamohammadi, Ali [1 ]
Refaei, Abdollah [1 ]
Sheikhahmadi, Haidar [2 ,3 ]
机构：
[1] Islamic Azad Univ, Sanandaj Branch, Sanandaj, Iran
[2] Inst Res Fundamental Sci IPM, Sch Astron, POB 19395-5531, Tehran, Iran
[3] North West Univ, Ctr Space Res, Mafikeng, South Africa
来源：
MODERN PHYSICS LETTERS A | 2019年 / 34卷 / 33期
关键词：
Low anisotropy; non-canonical scalar field; intermediate inflation; steep potential; EXACT COSMOLOGICAL SOLUTIONS; F(R; T); GRAVITY; MODELS; DYNAMICS;
D O I：
10.1142/S0217732319502729
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The behavior of a non-canonical scalar field within an anisotropic Bianchi type I, spatially homogeneous Universe in the framework of the intermediate inflation will be studied. It will be examined on the condition that both the anisotropy and non-canonical sources come together if there is any improvement in compatibility with the observational data originated from Planck 2015. Based on this investigation, it can be observed that automatically a steep potential which can manage inflation in a better way will be obtained. Additionally, as a common procedure for an inflationary study, we shall try to calculate the related inflationary observables such as the amplitude of the scalar perturbations, scalar and tensor spectral indices, tensor-to-scalar ratio, the running spectral index and the number of e-folds. As an exciting part of our results, we will find that our model has a good consistency compared to data resulting from CMB and different Planck results. To justify our claims, the well-known canonical inflationary scenario in an anisotropic Bianchi type I Universe will also be evaluated.
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页数：18
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