Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-Graviton Interaction in PP-Wave Background in Matrix Theory and
  Supergravity   We compute the two-body one-loop effective action for the matrix theory in
the pp-wave background, and compare it to the effective action on the
supergravity side in the same background. Agreement is found for the effective
actions on both sides. This points to the existence of a supersymmetric
nonrenormalization theorem in the pp-wave background.

16
The categories of this paper are: stat
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat