Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Green-Schwarz superstring action in a curved magnetic Ramond-Ramond
  background   We derive the complete covariant action for the type IIA superstring in a
simple D=10 background which represents a 7-brane with a magnetic Ramond-Ramond
vector field (and is U-dual to the Kaluza-Klein Melvin solution). This curved
background can be obtained by dimensional reduction from a flat (but
topologically non-trivial) D=11 space-time. The action of a supermembrane
propagating in this flat D=11 space is straightforward to write down. The
explicit form of the superstring action is then obtained by double dimensional
reduction of the supermembrane action. In the light-cone gauge the action
contains only quadratic and quartic terms in fermions.

11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
18
The categories of this paper are: econ
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess