Twisted holography of defect fusions

Jihwan Oh, Yehao Zhou

SciPost Phys. 10, 105 (2021) · published 14 May 2021


In the twisted M-theory setting, various types of fusion of M2 and M5 branes induce coproducts between the algebra of operators on M2 branes and the algebra of operators on M5 branes. By doing a perturbative computation in the gravity side, which is captured by the 5d topological holomorphic $U(1)$ Chern-Simons theory, we reproduce the non-perturbative coproducts.

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