期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.241302
关键词
-
资金
- DFG (Germany) [TR-27]
- European Union [MRTN-CT-2004-503369]
- MICINN [FPA2005-01269/ FPA2008-00319]
- Generalitat Valenciana [BEST/2008/164]
- Spanish FPU
- MPI for Physics in Munich
We study flavor oscillations in the early Universe, assuming primordial neutrino-antineutrino asymmetries. Including collisions and pair processes in the kinetic equations, we not only estimate the degree of flavor equilibration, but for the first time also kinetic equilibration among neutrinos and with the ambient plasma. Typically, the restrictive big-bang nucleosynthesis bound on the nu(e)(nu) over bar (e) asymmetry indeed applies to all flavors as claimed in the previous literature, but fine-tuned initial asymmetries always allow for a large surviving neutrino excess radiation that may show up in precision cosmological data.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据