Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalisability of non-homogeneous T-dualised sigma-models   The quantum equivalence between sigma-models and their non-abelian T-dualised
partners is examined for a large class of four dimensional non-homogeneous and
quasi-Einstein metrics with an isometry group SU(2) times U(1). We prove that
the one-loop renormalisability of the initial torsionless sigma-models is
equivalent to the one-loop renormalisability of the T-dualised torsionful
model. For a subclass of Kahler original metrics, the dual partners are still
Kahler (with torsion).

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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: cs
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin