Self-consistent evolution of magnetic fields and chiral asymmetry in the early Universe
Physical review letters, 2012•APS
We show that the evolution of magnetic fields in a primordial plasma, filled with standard
model particles at temperatures T≳ 10 MeV, is strongly affected by the chiral anomaly—an
effect previously neglected. Although reactions, equilibrating left and right electrons, are in
thermal equilibrium for T≲ 80 TeV, a left-right asymmetry develops in the presence of strong
magnetic fields. This results in magnetic helicity transfer from shorter to longer scales and
lepton asymmetry present in the plasma until T∼ 10 MeV, which may strongly affect many …
model particles at temperatures T≳ 10 MeV, is strongly affected by the chiral anomaly—an
effect previously neglected. Although reactions, equilibrating left and right electrons, are in
thermal equilibrium for T≲ 80 TeV, a left-right asymmetry develops in the presence of strong
magnetic fields. This results in magnetic helicity transfer from shorter to longer scales and
lepton asymmetry present in the plasma until T∼ 10 MeV, which may strongly affect many …
We show that the evolution of magnetic fields in a primordial plasma, filled with standard model particles at temperatures , is strongly affected by the chiral anomaly—an effect previously neglected. Although reactions, equilibrating left and right electrons, are in thermal equilibrium for , a left-right asymmetry develops in the presence of strong magnetic fields. This results in magnetic helicity transfer from shorter to longer scales and lepton asymmetry present in the plasma until , which may strongly affect many processes in the early Universe.
American Physical Society