von Kármán-Howarth equation for three-dimensional two-fluid plasmas.

@article{Andrs2016vonKE,
  title={von K{\'a}rm{\'a}n-Howarth equation for three-dimensional two-fluid plasmas.},
  author={Nahuel Andr{\'e}s and Pablo D. Mininni and Pablo A. Dmitruk and Daniel O. G{\'o}mez},
  journal={Physical review. E},
  year={2016},
  volume={93 6},
  pages={
          063202
        }
}
We derive the von Kármán-Howarth equation for a full three-dimensional incompressible two-fluid plasma. In the long-time limit and for very large Reynolds numbers we obtain the equivalent of the hydrodynamic "four-fifths" law. This exact law predicts the scaling of the third-order two-point correlation functions, and puts a strong constraint on the plasma turbulent dynamics. Finally, we derive a simple expression for the 4/5 law in terms of third-order structure functions, which is appropriate… 

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