Scale-invariant helical magnetic fields from inflation

Tomohiro Fujita; Ruth Durrer

doi:10.1088/1475-7516/2019/09/008

Scale-invariant helical magnetic fields from inflation

Tomohiro Fujita, Ruth Durrer

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

We discuss a model which can generate scale-invariant helical magnetic fields on large scales (≤ 1Mpc) in the primordial universe. It is also shown that the electric conductivity becomes significant and terminates magnetogenesis even before reheating is completed. By solving the electromagnetic dynamics taking conductivity into account, we find that magnetic fields with amplitude B∼ 10^-15G at present can be generated without encountering a backreaction or strong coupling problem.

Original language	English
Article number	008
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2019
Issue number	9
DOIs	https://doi.org/10.1088/1475-7516/2019/09/008
Publication status	Published - 2019 Sept 3
Externally published	Yes

Keywords

extragalactic magnetic fields
ination
primordial magnetic fields

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1088/1475-7516/2019/09/008

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Scale-invariant helical magnetic fields from inflation

Abstract

Keywords

ASJC Scopus subject areas

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