Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The origins of $k^{-2}$ spectrum in the decaying Taylor-Green
  magnetohydrodynamic turbulent flows   We investigate the origins of $k^{-2}$ spectrum in a decaying Taylor-Green
magnetohydrodynamic flow with zero large scale magnetic flux that was reported
in Lee et al. (2010). A possible candidate for this scaling exponent has been
the weak turbulence phenomenology. From our numerical simulations, we observe
that current sheets in the magnetic Taylor-Green flow are formed in regions of
magnetic discontinuities. Based on this observation and by studying the
influence of the current sheets on the energy spectrum, using a filtering
technique, we argue that the discontinuities are responsible for the $-2$ power
law scaling of the energy spectra of this flow.

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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
7
The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess