Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalization of Twisted Ramond Fields in D1-D5 SCFT$_2$   We explore the Ramond sector of the deformed two-dimensional $\cal N = (4,
4)$ superconformal $(T^4)^N /S_N$ orbifold theory, describing bound states of
D1-D5 brane system in type IIB superstring. We derive the large-$N$ limit of
the four-point function of two R-charged twisted Ramond fields and two marginal
deformation operators at the free orbifold point. Specific short-distance
limits of this function provide several structure constants, the OPE fusion
rules and the conformal dimensions of a few non-BPS operators. The second order
correction (in the deformation parameter) to the two-point function of the
Ramond fields, defined as double integrals over this four-point function, turns
out to be UV-divergent, requiring an appropriate renormalization of the fields.
We calculate the corrections to the conformal dimensions of the twisted Ramond
ground states at the large-$N$ limit. The same integral yields the first-order
deviation from zero of the structure constant of the three-point function of
two Ramond fields and one deformation operator. Similar results concerning the
correction to the two-point function of bare twist operators and their
renormalization are also obtained.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: math
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg