Magnetic Helicity in Sphaleron Debris

Details Magnetic Helicity in Sphaleron Debris Magnetic Helicity in Sphaleron Debris

2011-05-18

arxiv.org/abs/1105.3744v2

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 1 figure. v2: Minor revisions; matches published version in Physical Review D

Scientific paper

We develop an analytical technique to evaluate the magnetic helicity in the
debris from sphaleron decay. We show that baryon number production leads to
left-handed magnetic fields, and that the magnetic helicity is conserved at
late times. Our analysis explicitly demonstrates the connection between
sphaleron-mediated cosmic baryogenesis and cosmic magnetogenesis.

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