Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-Energy Effective Action in N=4 Super Yang-Mills Theories   We review a recent progress in constructing low-energy effective action in
N=4 super Yang-Mills theories. Using harmonic superspace approach we consider
N=4 SYM in terms of unconstrained N=2 superfield and apply N=2 background field
method to finding effective action for N=4 SU(n) SYM broken down to
U(n)$^{n-1}$. General structure of leading low-energy corrections to effective
action is discussed.

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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
2
The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga