Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dualities, CPT Symmetry and Dimensional Reduction in String Theory   In this lecture we address the following issues in the context of string
theories: i) The role played by S and T dualities in obtaining topological
inflation in N=1 supergravity models, ii) A mechanism to generate the baryon
asymmetry of the Universe based on the string interactions that violate CPT
symmetry and iii) The quantum cosmology of the dimensionally reduced
multidimensional Einstein-Yang-Mills system.

1
The categories of this paper are: cs
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn