https://doi.org/10.1140/epjc/s10052-021-09181-x
Regular Article - Theoretical Physics
CMB imprints of non-canonical anisotropic inflation
1
Phenikaa Institute for Advanced Study, Phenikaa University, 12116, Hanoi, Vietnam
2
Faculty of Basic Sciences, Phenikaa University, 12116, Hanoi, Vietnam
3
Faculty of Physics, VNU University of Science, Vietnam National University, 11416, Hanoi, Vietnam
4
Institute of Physics, National Chiao Tung University, 30010, Hsin Chu, Taiwan
a
tuan.doquoc@phenikaa-uni.edu.vn
Received:
25
January
2021
Accepted:
26
April
2021
Published online:
5
May
2021
Effect of non-canonical scalar fields on the CMB imprints of the anisotropic inflation will be discussed in details in this paper. In particular, we are able to obtain the general formalism of the angular power spectra in the scalar perturbations, tensor perturbations, cross-correlations, and linear polarization in the context of the anisotropic inflation model involving non-canonical scalar fields. Furthermore, some significant numerical spectra will be plotted using the most recent data of Planck as well as the BICEP2 and Keck array. As a result, we find a very interesting point that the TT spectra induced by the tensor perturbations as well as by the linear polarization will increase when the speed of sound decreases.
© The Author(s) 2021
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3
