Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Landau-Ginzburg description of $(A_1^{(1)})^{\oplus N}$
  invariants   We search for a \Lg\ interpretation of non-diagonal modular invariants of
tensor products of minimal $n=2$ superconformal models, looking in particular
at automorphism invariants and at some exceptional cases. For the former we
find a simple description as \lgo s, which reproduce the correct chiral rings
as well as the spectra of various Gepner--type models and orbifolds thereof. On
the other hand, we are able to prove for one of the exceptional cases that this
conformal field theory cannot be described by an orbifold of a \Lg\ model with
respect to a manifest linear symmetry of its potential.

9
The categories of this paper are: nlin
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph