Spontaneous Magnetization of Axion Domain Wall and Primordial Magnetic Field

Details Spontaneous Magnetization of Axion Domain Wall and Primordial Magnetic Field Spontaneous Magnetization of Axion Domain Wall and Primordial Magnetic Field

1997-05-29

arxiv.org/abs/hep-ph/9705456v1

Phys.Rev.Lett. 79 (1997) 2927-2930

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 Pages, Revtex

Scientific paper

10.1103/PhysRevLett.79.2927

We show that axion domain walls gain spontaneous magnetization in early universe by trapping either electrons or positrons with their spins polarized. The reason is that the walls produces an attractive potential for these particles. We argue that the wall bounded by an axionic superconducting string leaves a magnetic field after its decay. We obtain a field $\sim 10^{-23}$ Gauss on the scale of horizon at the recombination.

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