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arXiv · 1403.5168

Primordial Magnetic Fields from the Post-Inflationary Universe

Takeshi Kobayashi
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Abstract

We explore cosmological magnetogenesis in the post-inflationary universe, when the inflaton oscillates around its potential minimum and the universe is effectively dominated by cold matter. During this epoch prior to reheating, large-scale magnetic fields can be significantly produced by the cosmological background. By considering magnetogenesis both during and after inflation, we demonstrate that magnetic fields stronger than 10^{-15} G can be generated on Mpc scales without having strong couplings in the theory, or producing too large electric fields that would dominate the universe.

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Takeshi Kobayashi. 2014-05-28. Primordial Magnetic Fields from the Post-Inflationary Universe. https://doi.org/10.1088/1475-7516%2F2014%2F05%2F040

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