Cosmological magnetic fields from inflation and backreaction
By Sugumi Kanno, Jiro Soda, Masa-aki Watanabe. 2009
192 citations recorded by the source corpus.
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.
Subfields: Astronomy and Astrophysics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/70696907ec7b273c9cf83b7c2887865d12ff122b
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In Astronomy and Astrophysics
In Electrical and Electronic Engineering
Citations in the corpus
- Gauge fields and inflation (2012, background): “Thus, after taking into account the backreaction, we realized that primordial magnetic fields on large scales from inflation cannot be expected [112].”