title: Spontaneous chiral symmetry breaking by hydromagnetic buoyancy.
abstract: 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.
authors.affiliation: NORDITA, AlbaNova University Center, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.
authors.forename: Piyali
authors.initials: P
authors.lastname: Chatterjee
authors.forename: Dhrubaditya
authors.initials: D
authors.lastname: Mitra
authors.forename: Axel
authors.initials: A
authors.lastname: Brandenburg
authors.forename: Matthias
authors.initials: M
authors.lastname: Rheinhardt