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Chiral Anomaly and Dynamos from Inhomogeneous Chemical Potential Fluctuations
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Ben-Gurion University of the Negev, Israel.ORCID iD: 0000-0001-7308-4768
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). Ilia State University, Georgia; Carnegie Mellon University, USA.ORCID iD: 0000-0002-7304-021X
Number of Authors: 32024 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 132, no 6, article id 065101Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2024. Vol. 132, no 6, article id 065101
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-231533DOI: 10.1103/PhysRevLett.132.065101ISI: 001190746200002PubMedID: 38394574Scopus ID: 2-s2.0-85184149712OAI: oai:DiVA.org:su-231533DiVA, id: diva2:1885417
Available from: 2024-07-23 Created: 2024-07-23 Last updated: 2024-07-23Bibliographically approved

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Rogachevskii, IgorBrandenburg, Axel

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Nordic Institute for Theoretical Physics (Nordita)Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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Physical Review Letters
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