Thông tin tài liệu
Nhan đề : | Stable small spatial hairs in a power-law k-inflation model |
Tác giả : | Tuan Q. Do |
Năm xuất bản : | 2021 |
Nhà xuất bản : | The European Physical Journal C |
Tóm tắt : | In this paper, we extend our investigation of the validity of the cosmic no-hair conjecture within non-canonical anisotropic inflation. As a result, we are able to figure out an exact Bianchi type I solution to a power-law k-inflation model in the presence of unusual coupling between scalar and electromagnetic fields as −f2(ϕ)FμνFμν/4. Furthermore, stability analysis based on the dynamical system method indicates that the obtained solution does admit stable and attractive hairs during an inflationary phase and therefore violates the cosmic no-hair conjecture. Finally, we show that the corresponding tensor-to-scalar ratio of this model turns out to be highly consistent with the observational data of the Planck 2018. |
Mô tả: | Q1 |
URI: | https://dlib.phenikaa-uni.edu.vn/handle/PNK/1745 https://doi.org/10.1140/epjc/s10052-021-08866-7 |
Bộ sưu tập | Bài báo khoa học |
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