Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal properties of three-dimensional magnetohydrodynamic
  turbulence: Do Alfv\'en waves matter?   We analyse the effects of the propagating Alfv\'en waves, arising due to
non-zero mean magnetic fields, on the nonequilibrium steady states of
three-dimensional (3d) homogeneous Magnetohydrodynamic (MHD) turbulence. In
particular, the effects of Alfv\'en waves on the universal properties of 3dMHD
turbulence are studied in a one-loop self-consistent mode-coupling approach. We
calculate the kinetic- and magnetic energy-spectra. We find that {\em even} in
the presence of a mean magnetic field the energy spectra are Kolmogorov-like,
i.e., scale as $k^{-5/3}$ in the inertial range where $\bf k$ is a Fourier
wavevector belonging to the inertial range. We also elucidate the multiscaling
of the structure functions in a log-normal model by evaluating the relevant
intermittency exponents, and our results suggest that the multiscaling
deviations from the simple Kolmogorov scaling of the structure functions
decrease with increasing strength of the mean magnetic field. Our results
compare favourably with many existing numerical and observational results.

26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th