Cosmological constraints on Lorentz invariance violation in the neutrino sector
Cosmological constraints on Lorentz invariance violation in the neutrino sector
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DOI：
10.1103/physrevd.86.065004
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发表时间：
2012-06
影响因子：
5
通讯作者：
Zongkuan Guo;Q. Huang;R. Cai;Yuan-zhong Zhang
中科院分区：
文献类型：
--
作者：
Zongkuan Guo;Q. Huang;R. Cai;Yuan-zhong Zhang
We derive the Boltzmann equation in the synchronous gauge for massive neutrinos with a deformed dispersion relation. Combining the 7-year WMAP data with lower-redshift measurements of the expansion rate, we give constraints on the deformation parameter and find that the deformation parameter is strongly degenerate with the physical dark matter density rather than the neutrino mass. Our results show that there is no evidence for Lorentz invariant violation in the neutrino sector. The ongoing Planck experiment could provide improved constraints on the deformation parameter.
