Is the baryon asymmetry of the Universe related to galactic magnetic fields?

Details Is the baryon asymmetry of the Universe related to galactic magnetic fields? Is the baryon asymmetry of the Universe related to galactic magnetic fields?

2009-05-20

arxiv.org/abs/0905.3365v1

Phys.Rev.D80:083510,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex file, 4 pages, 1 figure

Scientific paper

10.1103/PhysRevD.80.083510

A tiny hypermagnetic field generated before the electroweak phase transition (EWPT) associated to the generation of elementary particle masses can polarize the early Universe hot plasma at huge redshifts z > 10^15. The anomalous violation of the right-handed electron current characteristic of the EWPT converts the lepton asymmetry into a baryon asymmetry. Under reasonable approximations, the magnetic field strength inferred by requiring such "leptogenic" origin for the observed baryon asymmetry of the Universe matches the large-scale cosmological magnetic field strengths estimated from current astronomical observations.

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