Constraints on cosmic electric charge asymmetry and neutrino charge from the microwave background
Constraints on cosmic electric charge asymmetry and neutrino charge from the microwave background
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DOI：
10.1016/0370-2693(95)01261-3
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发表时间：
1996-01
影响因子：
4.4
通讯作者：
S. Sengupta;P. Pal
中科院分区：
文献类型：
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作者：
S. Sengupta;P. Pal
我们指出，宇宙中整体电荷的不对称性将通过萨赫-沃尔夫效应在宇宙微波背景辐射（CMBR）中产生各向异性。由此，使用 COBE 数据找到了宇宙学尺度上电荷不对称性的上限，这意味着 CMBR 的 ΔT T ≤ 10−4。同样的论点也限制了简并中微子的电荷。
We point out that an overall electric charge asymmetry in the universe will generate an anisotropy in the cosmic microwave background radiation (CMBR) via the Sach-Wolfe effect. From this, an upper limit on the electric charge asymmetry over a cosmological scale is found using the COBE data, which implies ΔT T ≤ 10−4for the CMBR. The same argument constrains the charge of degenerate neutrinos.