Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Instanton corrections to the effective action of N=4 SYM   We compute the one-instanton effective action of N=4 super Yang-Mills theory
with gauge group Sp(2N). The result can be written in a very compact and
manifestly supersymmetric form involving an integral over the superspace of an
irrational function of the N=4 on-shell superfields. In the Coulomb branch, the
instanton corrects both the MHV and next-to-next-MHV higher derivative terms
D^4F^{2n+2} and F^{2n+4}. We confirm at the non-perturbative level the
non-renormalization theorems for MHV F^{2n+2} terms that are expected to
receive perturbative corrections only at n-loops. We compute also the one and
two-loop corrections to the D^4F^4 term and show that its completion under
SL(2,Z) duality is consistent with the one-instanton results of U(2) gauge
group.

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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
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The categories of this paper are: eess
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The categories of this paper are: solv-int
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
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The categories of this paper are: econ
10
The categories of this paper are: q-bio
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The categories of this paper are: stat
3
The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin