Discrete symmetries in dynamo reversals
作者： Riddhi Bandyopadhyay , Mahendra K. Verma
DOI: 10.1063/1.4985307
关键词: Field (physics) 、 Theoretical physics 、 Fourier transform 、 Physics 、 Homogeneous space 、 Magnetic field 、 Wavenumber 、 Nonlinear system 、 Magnetohydrodynamics 、 Dynamo
摘要: Quantification of the velocity and magnetic field reversals in dynamo remains an interesting challenge. In this paper, using group-theoretic analysis, we classify reversing non-reversing Fourier modes during a reversal Cartesian box. Based on odd-even parities wavenumber indices, categorise into eight classes each. Then, properties nonlinear interactions magnetohydrodynamics, show that these 16 elements form Klein 16-group Z 2 × . We demonstrate class Taylor-Green dynamo, as well earlier experiments models, belong to one predicted by our arguments.
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