Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On All-Order Higher-Point $\text{D}p$-$\overline{\text{D}p}$ Effective
  Actions   In this paper we derive a class of contributions to all orders in $\alpha'$
to the effective action of D-brane-anti D-brane systems in Type II String
Theory, considering an amplitude involving a closed-string Ramond-Ramond state
and four open-string states: two tachyons, a scalar and a gauge boson. This
type of amplitude arises in both Type IIA and Type IIB strings, and reveals a
number of new effective couplings. Furthermore, we derive a series
representation for the result that goes beyond a factorized limit that was
recently studied, and which is expected to apply to more general six-point
amplitudes of superstrings, including external fermions.

28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin