Estimate of the primordial magnetic field helicity

被引：136
|
作者：
Vachaspati, T
机构：
[1] Tata Inst Fundamental Res, Dept Astron & Astrophys, Colaba 400005, Mumbai, India
[2] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 25期
关键词：
D O I：
10.1103/PhysRevLett.87.251302
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Electroweak baryogenesis proceeds via changes in the non-Abelian Chem-Simons number. It is argued that these changes generate a primordial magnetic field with left-handed helicity. The helicity density of the primordial magnetic field today is then estimated to be given by similar to 10(2)n(b), where n(b) similar to 10(-6) /cm(3) is the present cosmological baryon number density. With certain assumptions about the inverse cascade we find that the field strength at recombination is similar to 10(-13) G on a comoving coherence scale similar to0.1 pc.
引用
收藏
页码：251302 / 1
页数：4
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