Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The physical basis of the zero charge flux constraint in gyro kinetics
  as local momentum conservation, by analogy to the classical Coulomb
  collisional case   Gyrokinetic turbulence is subject to the constraint that the turbulent charge
flux vanishes. This is interpreted, in detail, as arising from momentum
conservation at the fluctuation scale. There are beautiful and deep analogies
with the classical transport from Coulomb collisions.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio