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.

8 pages, 4 figures

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Cited by in corpus (3)

• Thermodynamics of massless particles in curved spacetime
• Measuring the modified gravitational waves propagation beyond general relativity from CMB observations
• Measuring the speed of scalar induced gravitational waves from observations