Lorentz invariance violation in the neutrino sector: a joint analysis from big bang nucleosynthesis and the cosmic microwave background

We investigate constraints on Lorentz invariance violation in the neutrino sector from a joint analysis of big bang nucleosynthesis and the cosmic microwave background. The effect of Lorentz invariance violation during the epoch of big bang nucleosynthesis changes the predicted helium-4 abundance, w...

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Bibliographic Details
Published in:arXiv.org 2017-06
Main Authors: Wei-Ming, Dai, Zong-Kuan Guo, Rong-Gen Cai, Yuan-Zhong, Zhang
Format: Article
Language:English
Subjects:
Big bang cosmology
Big Bang theory
Cosmic microwave background
Dark matter
Deformation
Expanding universe theory
Helium
Invariance
Neutrinos
Nuclear fusion
Nuclei (nuclear physics)
Parameters
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Summary:We investigate constraints on Lorentz invariance violation in the neutrino sector from a joint analysis of big bang nucleosynthesis and the cosmic microwave background. The effect of Lorentz invariance violation during the epoch of big bang nucleosynthesis changes the predicted helium-4 abundance, which influences the power spectrum of the cosmic microwave background at the recombination epoch. In combination with the latest measurement of the primordial helium-4 abundance, the Planck 2015 data of the cosmic microwave background anisotropies give a strong constraint on the deformation parameter since adding the primordial helium measurement breaks the degeneracy between the deformation parameter and the physical dark matter density.
ISSN:2331-8422
DOI:10.48550/arxiv.1701.02553