FERMI-DIRAC CORRECTIONS TO THE RELIC ABUNDANCES

被引：18

作者：

DOLGOV, AD

KAINULAINEN, K

机构：

[1] ITEP,MOSCOW 117259,RUSSIA

[2] UNIV MINNESOTA,INST THEORET PHYS,MINNEAPOLIS,MN 55455

来源：

NUCLEAR PHYSICS B | 1993年 / 402卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(93)90646-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We derive an equation for the evolution of the number density of a massive particle species in the early universe, which correctly accounts for the Fermi-Dirac (FD) statistics. The FD-corrections are sizable and potentially important if the decoupling from the thermal equilibrium takes place at temperatures of the order of, or less than the mass of the particle. This is the case e.g. for a few MeV tau neutrino with the ordinary weak interactions.

引用

页码：349 / 359

页数：11

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