CMB imprints of non-canonical anisotropic inflation

Tuan Q. Do*, W. F. Kao, Ing Chen Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number390
JournalEuropean Physical Journal C
Volume81
Issue number5
DOIs
StatePublished - May 2021

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