arXiv:1112.1356·v2·Cosmology and Nongalactic Astrophysics
Three-magnetic fields
Tomi S. Koivisto🇳🇴 · Federico R. Urban🇨🇦
Abstract
A completely new mechanism to generate the observed amount of large-scale cosmological magnetic fields is introduced in the context of three-form inflation. The amplification of the fields occurs via fourth order dynamics of the vector perturbations and avoids the backreaction problem that plagues most previously introduced mechanisms.
Comments: 4 pages, 2 figures -- v2 as published (title changed in the published version to "Cosmic magnetization in three-form inflation")