Ferromagnetic Vacuum and Galactic Magnetic Fields

Details Ferromagnetic Vacuum and Galactic Magnetic Fields Ferromagnetic Vacuum and Galactic Magnetic Fields

1994-02-16

arxiv.org/abs/hep-ph/9402295v1

Phys.Lett.B329:195-198,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, no figures, NORDITA-94/6 P

Scientific paper

10.1016/0370-2693(94)90760-9

Non-abelian gauge theories may have a ferromagnet-like vacuum with a non-zero magnetic field, which also exists at finite temperature. We argue that the formation of the ferromagnet-like vacuum at GUT scales gives rise to a Maxwell magnetic field imprinted on the comoving plasma, and that it is energetically favourable to align the field in different correlation volumes. This results in a coherent magnetic field pertaining the whole universe, with a magnitude $B_{now}\simeq 10^{-14}\G$, which is of the correct size to serve as the seed field for the galactic dynamo.

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