Amplification of isocurvature perturbations induced by active-sterile neutrino oscillations

被引：17
作者：
Di Bari, P
机构：
[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] INFN Roma I, I-00185 Rome, Italy
来源：
PHYSICS LETTERS B | 2000年 / 482卷 / 1-3期
关键词：
early universe; neutrino oscillations; sterile neutrino; baryon isocurvature perturbations; leptogenesis;
D O I：
10.1016/S0370-2693(00)00487-1
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show how the generation of a lepton number in the early universe induced by v(alpha) <-> V-s, in presence of small baryon fives rise to the formation of lepton domains. The structure of these domains reflects the spectral number inhomogeneities that generated it and interestingly the size of the lepton domains can be features of the baryon number inhomogeneities that generated it and interestingly the size of the lepton domains can be super-horizon. (C) 2000 Elsevier Science B.V. All rights reserved.
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收藏
页码：150 / 160
页数：11
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