Signatures of Modified Dispersion Relation of Graviton in the Cosmic Microwave Background
arXiv:1712.07771 · doi:10.1088/1475-7516/2018/02/020
Abstract
The dispersion relation of graviton is a fundamental issue for fundamental physics about gravity. In this paper we investigate how the modified dispersion relation of graviton affects the cosmic microwave background (CMB) power spectra, in particular the B-mode polarization. Our results will be useful to test the dispersion relation of graviton at the energy scale around $10^{-29}$ eV.
8 pages, 4 figures