Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superstring Interactions in a pp-wave Background   We construct light-cone gauge superstring field theory in a pp-wave
background with Ramond-Ramond flux. The leading term in the interaction
Hamiltonian is determined up to an overall function of $p^+$ by requiring
closure of the pp-wave superalgebra. The bosonic and fermionic Neumann matrices
for this cubic vertex are derived, as is the interaction point operator. We
comment on the development of a $1/\mu p^+$ expansion for these results.

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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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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: solv-int
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The categories of this paper are: q-alg