Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonreductive WZW models and their CFTs   We study two-dimensional WZW models with target space a nonreductive Lie
group. Such models exist whenever the Lie group possesses a bi-invariant
metric. We show that such WZW models provide a lagrangian description of the
nonreductive (affine) Sugawara construction. We investigate the gauged WZW
models and we prove that gauging a diagonal subgroup results in a conformal
field theory which can be identified with a coset construction. A large class
of exact four-dimensional string backgrounds arise in this fashion. We then
study the topological conformal field theory resulting from the $G/G$ coset. We
identify the Kazama algebra extending the BRST algebra, and the BV algebra
structure in BRST cohomology which it induces.

28
The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph