Dynamics of Ferromagnetic Walls: Gravitational Properties

Details Dynamics of Ferromagnetic Walls: Gravitational Properties Dynamics of Ferromagnetic Walls: Gravitational Properties

2003-09-09

arxiv.org/abs/astro-ph/0309266v3

Int.J.Mod.Phys.D14:521-542,2005

Astronomy and Astrophysics

Astrophysics

Replaced with revised version, accepted for publication in IJMPD

Scientific paper

10.1142/S021827180500681X

We discuss a new mechanism which allows domain walls produced during the primordial electroweak phase transition. We show that the effective surface tension of these domain walls can be made vanishingly small due to a peculiar magnetic condensation induced by fermion zero modes localized on the wall. We find that in the perfect gas approximation the domain wall network behaves like a radiation gas. We consider the recent high-red shift supernova data and we find that the corresponding Hubble diagram is compatible with the presence in the Universe of a ideal gas of ferromagnetic domain walls. We show that our domain wall gas induces a completely negligible contribution to the large-scale anisotropy of the microwave background radiation.

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