Comment on "Energy Transfer and Dual Cascade in Kinetic Magnetized Plasma Turbulence"

Details Comment on "Energy Transfer and Dual Cascade in Kinetic Magnetized Plasma Turbulence" Comment on "Energy Transfer and Dual Cascade in Kinetic Magnetized Plasma Turbulence"

2011-05-09

arxiv.org/abs/1105.1593v5

Nonlinear Sciences

Chaotic Dynamics

the typos in some formulae corrected; some rewording (say, acknowledging the Letter's contributions in the beginning of the Co

Scientific paper

We argue that the constraints on transfers, given in the Letter [G. Plunk and T. Tatsuno, Phys. Rev. Lett. {\bf 106}, 165003 (2011)], but not correctly, do not give the transfer and/or cascade directions which however can be assisted by the absolute equilibria calculated in this Comment, following Kraichnan [R. H. Kraichnan, Phys. Fluids {\bf 102}, 1417 (1967)]. One of the important statements about the transfers with only one or no diagonal component can be shown to be inappropriate according to the fundamental dynamics. Some mathematical mistakes are pointed out.

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