Signatures of Modified Dispersion Relation of Graviton in the Cosmic Microwave Background
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.
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