Twisting space-time: relativistic origin of seed magnetic field and vorticity.
We demonstrate that a purely ideal mechanism, originating in the space-time distortion caused by the demands of special relativity, can break the topological constraint (leading to helicity conservation) that would forbid the emergence of a magnetic field (a generalized vorticity) in an ideal nonrelativistic dynamics. The new mechanism, arising from the interaction between the inhomogeneous flow fields and inhomogeneous entropy, is universal and can provide a finite seed even for mildly relativistic flows.
Mahajan
S M
SM
Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA.
Yoshida
Z
Z