Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: D-instanton Effects in Type IIB String Theory   We study D-instanton contributions to supergraviton scattering amplitudes in
the ten-dimensional type IIB superstring theory beyond the leading
non-perturbative order. In particular, we determine the one-D-instanton
contribution to maximal R-symmetry violating (MRV) amplitudes with arbitrary
momenta at the first subleading order in string coupling, as well as the
effects of a D-/anti-D-instanton pair at leading nontrivial order in the
momentum expansion. These results confirm a number of predictions of S-duality,
and unveil some previously unknown pieces of type IIB string amplitudes.
  Our computation is based on the Neveu-Schwarz-Ramond formalism with picture
changing operators and vertical integration. The naive on-shell prescription
for D-instanton mediated amplitudes, based on integration over the moduli space
of worldsheet geometries as well as the moduli space of D-instanton boundary
conditions, suffers from potential open string divergences and regularization
ambiguities that are in principle resolved in the framework of open+closed
superstring field theory. In this paper, the "on-shell ambiguities" of
one-D-instanton MRV amplitudes are resolved by arguments involving
supersymmetry and soft limits, part of which is verified by a string field
theoretic computation in a highly nontrivial manner.

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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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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: funct-an
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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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: chem-ph