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Spontaneous chiral symmetry breaking by hydromagnetic buoyancy
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Faculty of Science, Department of Astronomy.
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
2011 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 84, no 2, 25403(R)- p.Article in journal (Refereed) Published
Abstract [en]

Evidence for the parity-breaking nature of the magnetic buoyancy instability in a stably stratified gas is reported. In the absence of rotation, no helicity is produced, but the nonhelical state is found to be unstable to small helical perturbations during the development of the instability. The parity-breaking nature of this magnetohydrodynamic instability appears to be the first of its kind and has properties similar to those in chiral symmetry breaking in biochemistry. Applications to the production of mean fields in galaxy clusters are discussed.

Place, publisher, year, edition, pages
2011. Vol. 84, no 2, 25403(R)- p.
Keyword [en]
Macroinstabilities, Spontaneous and radiative symmetry breaking, Generation of magnetic fields, magnets, Buoyancy-driven instabilities
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-70038DOI: 10.1103/PhysRevE.84.025403OAI: oai:DiVA.org:su-70038DiVA: diva2:478725
Available from: 2012-01-16 Created: 2012-01-16 Last updated: 2017-12-08Bibliographically approved

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Nordic Institute for Theoretical Physics (Nordita)Department of Astronomy
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Physical Review E. Statistical, Nonlinear, and Soft Matter Physics
Astronomy, Astrophysics and Cosmology

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