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arXiv · 1102.0076

On W-algebras and the symmetries of defects of 6d N=(2,0) theory

Yuji Tachikawa
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Abstract

We consider 6d N=(2,0) theory on N M5-branes, together with a 4d defect labeled by a Young diagram Y specifying its global symmetry G_Y. A recent conjecture states that a compactification of this system leads to a 2d theory with W-algebra symmetry depending on Y. We provide a check of the conjecture by reproducing the level of the current subalgebra \hat{G}_Y of this W-algebra from the property of the 4d defect.

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Yuji Tachikawa. 2011-02-24. On W-algebras and the symmetries of defects of 6d N=(2,0) theory. https://doi.org/10.1007/jhep03(2011)043

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