Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CFT Description of String Theory Compactified on Non-compact Manifolds
  with G_2 Holonomy   We construct modular invariant partition functions for strings propagating on
non-compact manifolds of G_2 holonomy. Our amplitudes involve a pair of N=1
minimal models M_m, M_{m+2} (m=3,4,...) and are identified as describing
strings on manifolds of G_2 holonomy associated with A_{m-2} type singularity.
It turns out that due to theta function identities our amplitudes may be cast
into a form which contain tricritical Ising model for any m. This is in accord
with the results of Shatashvili and Vafa. We also construct a candidate
partition function for string compactified on a non-compact Spin(7) manifold.

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The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat