Cosmological magnetic fields from inflation and backreaction

被引：174

作者：

Kanno, Sugumi ^{[1
]}

Soda, Jiro ^{[2
]}

Watanabe, Masa-aki ^{[2
]}

机构：

[1] Univ Durham, Dept Math Sci, Ctr Particle Theory, Durham DH1 3LE, England

[2] Kyoto Univ, Dept Phys, Kyoto 6068501, Japan

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2009年 / 12期

关键词：

primordial magnetic fields; inflation;

D O I：

10.1088/1475-7516/2009/12/009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the backreaction problem in a mechanism of magnetogenesis from inflation. In usual analysis, it has been assumed that the backreaction due to electromagnetic fields spoils inflation once it becomes important. However, there exists no justification for this assumption. Hence, we analyze magnetogenesis from inflation by taking into account the backreaction. On the contrary to the naive expectation, we show that inflation still continues even after the backreaction begins to work. Nevertheless, it turns out that creation of primordial magnetic fields is significantly suppressed due to the backreaction.

引用

页数：13

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