Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simplifying amplitudes in Maxwell-Einstein and Yang-Mills-Einstein
  supergravities   This article reviews recent progress in formulating double-copy constructions
for scattering amplitudes in supergravity theories with N=2 supersymmetry in
five and four spacetime dimensions. Particular attention is devoted to infinite
families of Maxwell-Einstein theories with symmetric and homogeneous target
spaces and to Yang-Mills-Einstein theories with compact gauge groups. Extension
of the construction to theories with spontaneously-broken gauge symmetry is
also discussed.

35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int