The spontaneous generation of uniform magnetic condensate in QED(3) gives rise to ferromagnetic domain walls at the electroweak phase transition. These ferromagnetic domain walls are characterized by vanishing effective surface energy density avoiding, thus, the domain wall problem. Moreover we find that the domain walls generate a magnetic field B similar or equal to 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 similar or equal to 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. (C) 1999 Published by Elsevier Science B.V. All rightst reserved.
Dynamical generation of the primordial magnetic field by ferromagnetic domain walls
CEA, Paolo;TEDESCO, LUIGI
1999-01-01
Abstract
The spontaneous generation of uniform magnetic condensate in QED(3) gives rise to ferromagnetic domain walls at the electroweak phase transition. These ferromagnetic domain walls are characterized by vanishing effective surface energy density avoiding, thus, the domain wall problem. Moreover we find that the domain walls generate a magnetic field B similar or equal to 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 similar or equal to 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. (C) 1999 Published by Elsevier Science B.V. All rightst reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
