NEUTRINO OSCILLATIONS IN THE EARLY UNIVERSE

被引：62

作者：

KOSTELECKY, VA

PANTALEONE, J

SAMUEL, S

机构：

[1] Physics Department, Indiana University, Bloomington

来源：

PHYSICS LETTERS B | 1993年 / 315卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(93)90156-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Numerical studies are performed for neutrino oscillations for t > 1/3 seconds after the big bang. The effects of electron, positron and neutrino backgrounds are properly included. Flavor evolution of the neutrino background is dominantly smooth. However, in a certain parameter region, coherent undamped oscillations of the neutrino background are possible. In addition, neutrino CP asymmetry is found to be considerably smaller than expected. Reasons are provided for the above effects and some physical implications are discussed.

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页码：46 / 50

页数：5

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