arXiv · 1302.6435
On the extended W-algebra of type sl_2 at positive rational level
Abstract
The extended W-algebra of type sl_2 at positive rational level, denoted by M_{p_+,p_-}, is a vertex operator algebra that was originally proposed in [1]. This vertex operator algebra is an extension of the minimal model vertex operator algebra and plays the role of symmetry algebra for certain logarithmic conformal field theories. We give a construction of M_{p_+,p_-} in terms of screening operators and use this construction to prove that M_{p_+,p_-} satisfies Zhu's c_2-cofiniteness condition, calculate the structure of the zero mode algebra (also known as Zhu's algebra) and classify all simple M_{p_+,p_-}-modules.
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Akihiro Tsuchiya, Simon Wood. 2014-07-15. On the extended W-algebra of type sl_2 at positive rational level. https://doi.org/10.1093/imrn%2Frnu090
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