Analytic description of the damping of gravitational waves by free streaming neutrinos

被引：32
|
作者：
Stefanek, Ben A. [1 ]
Repko, Wayne W. [1 ]
机构：
[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
来源：
PHYSICAL REVIEW D | 2013年 / 88卷 / 08期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.88.083536
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We provide an analytic solution to the general wavelength integro-differential equation describing the damping of tensor modes of gravitational waves due to free streaming neutrinos in the early Universe. Our result is expressed as a series of spherical Bessel functions whose coefficients are functions of the reduced wave number Q.
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页数：11
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