Testing multi-field inflation with LiteBIRD
Cosmology and Nongalactic Astrophysics
2023-10-18 v1 High Energy Physics - Phenomenology
Abstract
We investigate expected constraints on the primordial tensor power spectrum from the future cosmic microwave background polarization experiment LiteBIRD as a test of multi-field inflation. We argue that the measurements of the tensor-to-scalar ratio and the tensor spectral index, in combination with the constraints on the scalar spectral index from the Planck observation, are useful in testing multi-field inflation models. We also discuss implications for multi-field inflationary model building.
Keywords
Cite
@article{arxiv.2310.08158,
title = {Testing multi-field inflation with LiteBIRD},
author = {Ryusuke Jinno and Kazunori Kohri and Takeo Moroi and Tomo Takahashi and Masashi Hazumi},
journal= {arXiv preprint arXiv:2310.08158},
year = {2023}
}
Comments
31 pages, 6 figures