Magnetic domain walls of relic fermions as Dark Energy

Details Magnetic domain walls of relic fermions as Dark Energy Magnetic domain walls of relic fermions as Dark Energy

2005-01-17

arxiv.org/abs/astro-ph/0501348v3

AIP Conf.Proc. 805 (2006) 459-462

Astronomy and Astrophysics

Astrophysics

Essentially same as version 2; to appear in AIP proceedings of PASCOS 2005

Scientific paper

10.1063/1.2149755

We show that relic fermions of the Big Bang can enter a ferromagnetic state if they possess a magnetic moment and satisfy the requirements of Stoner theory of itinerant ferromagnetism. The domain walls of this ferromagnetism can successfully simulate Dark Energy over the observable epoch spanning $\sim 10$ billion years. We obtain conditions on the anomalous magnetic moment of such fermions and their masses. Known neutrinos fail to satisfy the requirements thus pointing to the possibility of a new ultralight sector in Particle Physics.

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