Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sigma Models with N=8 Supersymmetries in 2+1 and 1+1 Dimensions   We introduce an N=8 supersymmetric extension of the Bogomolny-type model for
Yang-Mills-Higgs fields in 2+1 dimensions related with twistor string theory.
It is shown that this model is equivalent to an N=8 supersymmetric U(n) chiral
model in 2+1 dimensions with a Wess-Zumino-Witten-type term. Further reduction
to 1+1 dimensions yields N=(8,8) supersymmetric extensions of the standard U(n)
chiral model and Grassmannian sigma models.

36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph