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arXiv · 2008.06053

4d Chern-Simons Theory as a 3d Toda Theory, and a 3d-2d Correspondence

Meer Ashwinkumar·Kee-Seng Png·Meng-Chwan Tan
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Abstract

We show that the four-dimensional Chern-Simons theory studied by Costello, Witten and Yamazaki, is, with Nahm pole-type boundary conditions, dual to a boundary theory that is a three-dimensional analogue of Toda theory with a novel 3d W-algebra symmetry. By embedding four-dimensional Chern-Simons theory in a partial twist of the five-dimensional maximally supersymmetric Yang-Mills theory on a manifold with corners, we argue that this three-dimensional Toda theory is dual to a two-dimensional topological sigma model with A-branes on the moduli space of solutions to the Bogomolny equations. This furnishes a novel 3d-2d correspondence, which, among other mathematical implications, also reveals that modules of the 3d W-algebra are modules for the quantized algebra of certain holomorphic functions on the Bogomolny moduli space.

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Meer Ashwinkumar, Kee-Seng Png, Meng-Chwan Tan. 2020-08-13. 4d Chern-Simons Theory as a 3d Toda Theory, and a 3d-2d Correspondence. https://doi.org/10.1007/jhep09(2021)057

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