PREPRINT
902C3FA5-025B-4987-B3ED-D020CBD4FA0B

# Dynamical Generation of the Primordial Magnetic Field by Ferromagnetic Domain Walls

Paolo Cea, Luigi Tedesco
arXiv:hep-th/9811221

Submitted on 25 November 1998

## Abstract

The spontaneous generation of uniform magnetic condensate in $QE{D}_{3}$ gives rise to ferromagnetic domain walls at the electroweak phase transition. These ferromagnetic domain walls are caracterized by vanishing effective surface energy density avoiding, thus, the domain wall problem. Moreover we find that the domain walls generate a magnetic field $B\simeq {10}^{24}Gauss$ at the electroweak scale which account for the seed field in the so called dynamo mechanism for the cosmological primordial magnetic field. We find that the annihilation processes of walls with size $R\simeq {10}^{5}Km$ could release an energy of order ${10}^{52}erg$ indicating the invisible ferromagnetic walls as possible compact sources of Gamma Ray Bursts.

## Preprint

Comment: LaTeX, 8 pages, 1 figure

Subjects: High Energy Physics - Theory; Astrophysics; General Relativity and Quantum Cosmology; High Energy Physics - Phenomenology