Description
I will show that torsion (co-)homology in the internal space of M-theory geometric engineering leads to topological interfaces in the Symmetry TFT (SymTFT) — a setup also known as the “club sandwich” in the literature. As a concrete example I will discuss geometries leading to 6d supersymmetric sp(n) gauge theories. By duality, I will further argue that also 7d and 8d frozen compactifications have such interfaces in the SymTFT for their electric/magnetic 1- and (d-3)-form symmetries. Finally I will use this symmetry structure to speculate about the IR limit upon SUSY breaking.
