Noether derivation of exact conservation laws for dissipationless reduced-fluid models

Details Noether derivation of exact conservation laws for dissipationless reduced-fluid models Noether derivation of exact conservation laws for dissipationless reduced-fluid models

2010-09-23

arxiv.org/abs/1009.4611v1

Physics

Plasma Physics

12 pages

Scientific paper

The energy-momentum conservation laws for general reduced-fluid (e.g., gyrofluid) models are derived by Noether method from a general reduced variational principle. The reduced canonical energy-momentum tensor (which is explicitly asymmetric and has the Minkowski form) exhibits polarization and magnetization effects associated with dynamical reduction. In particular, the asymmetry in the reduced canonical momentum-stress tensor produces a non-vanishing reduced intrinsic torque that can drive spontaneous toroidal rotation in axisymmetric tokamak plasmas.

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