Chiral Anomaly and Dynamos from Inhomogeneous Chemical Potential Fluctuations

Jennifer Schober, Igor Rogachevskii, Axel Brandenburg

Research output: Contribution to journalArticlepeer-review


In the standard model of particle physics, the chiral anomaly can occur in relativistic plasmas and plays a role in the early Universe, protoneutron stars, heavy-ion collisions, and quantum materials. It gives rise to a magnetic instability if the number densities of left- and right-handed electrically charged fermions are unequal. Using direct numerical simulations, we show this can result just from spatial fluctuations of the chemical potential, causing a chiral dynamo instability, magnetically driven turbulence, and ultimately a large-scale magnetic field through the magnetic α effect.

Original languageEnglish
Article number065101
JournalPhysical Review Letters
Issue number6
StatePublished - 9 Feb 2024

ASJC Scopus subject areas

  • General Physics and Astronomy


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