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arXiv · 2307.15118

Chiral anomaly and dynamos from inhomogeneous chemical potential fluctuations

Jennifer Schober·Igor Rogachevskii·Axel Brandenburg
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Abstract

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 alpha effect.

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Jennifer Schober, Igor Rogachevskii, Axel Brandenburg. 2023-07-27. Chiral anomaly and dynamos from inhomogeneous chemical potential fluctuations. https://doi.org/10.1103/physrevlett.132.065101

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