Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heterotic-Type II String Duality and the H-Monopole Problem   Since T-duality has been proved only perturbatively and most of the heterotic
states map into solitonic, non-perturbative, type II states, the 6-dimensional
string-string duality between the heterotic string and the type II string is
not sufficient to prove the S-duality of the former, in terms of the known
T-duality of the latter. We nevertheless show in detail that perturbative
T-duality, together with the heterotic-type II duality, does imply the
existence of heterotic H-monopoles, with the correct multiplicity and multiplet
structure. This construction is valid at a generic point in the moduli space of
heterotic toroidal compactifications.

23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics