Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Operator Product Expansion for Form Factors   We propose an operator product expansion for planar form factors of local
operators in $\mathcal{N}=4$ SYM theory. This expansion is based on the dual
conformal symmetry of these objects or, equivalently, the conformal symmetry of
their dual description in terms of periodic Wilson loops. A form factor is
decomposed into a sequence of known pentagon transitions and a new universal
object that we call the "form factor transition". This transition is subject to
a set of non-trivial bootstrap constraints, which we expect to be sufficient to
fully determine it. We evaluate the form factor transition for MHV form factors
of the chiral half of the stress tensor supermultiplet at leading order in
perturbation theory and use it to produce OPE predictions at any loop order. We
match the one-loop and two-loop predictions with data available in the
literature.

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The categories of this paper are: econ
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The categories of this paper are: q-alg
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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: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: cs
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The categories of this paper are: math-ph