The Darkness of Spin-0 Dark Radiation
arXiv:1407.2501 · doi:10.1088/1475-7516/2015/01/017
Abstract
We show that the scattering of a general spin-0 sector of dark radiation off the pre-recombination thermal plasma results in undetectably small spectral distortions of the Cosmic Microwave Background.
21 pages + references, 5 figures. Published version
References in corpus (9)
- Revisiting the bound on axion-photon coupling from Globular Clusters
- The 1% Concordance Hubble Constant
- Dark Radiation in LARGE Volume Models
- Neutrinos help reconcile Planck measurements with both Early and Local Universe
- Beyond y and μ: the shape of the CMB spectral distortions in the intermediate epoch, 1.5x10^4 < z < 2x10^5
- Relic Neutrinos, thermal axions and cosmology in early 2014
- Using BBN in cosmological parameter extraction from CMB: a forecast for Planck
- Constraining Fundamental Physics with Future CMB Experiments
- Probing early-universe phase transitions with CMB spectral distortions