Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Verlinde formula in logarithmic CFT   In rational conformal field theory, the Verlinde formula computes the fusion
coefficients from the modular S-transformations of the characters of the chiral
algebra's representations. Generalising this formula to logarithmic models has
proven rather difficult for a variety of reasons. Here, a recently proposed
formalism (arXiv:1303.0847 [hep-th]) for the modular properties of certain
classes of logarithmic theories is reviewed, and refined, using simple
examples. A formalism addressing fusion rules in simple current extensions is
also reviewed as a means to tackle logarithmic theories to which the proposed
modular formalism does not directly apply.

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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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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: quant-ph
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int