Author

Xing-Yang Yu

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Preprint Sep 2026

Chiral Spin(7) Sigma Models and Topological Modular Forms

We construct canonical chiral $\mathcal N=(0,1)$ sigma models on Spin(7) manifolds. The Spin(7) structure fixes the rank-seven bundle of the left-moving fermions, whose quadratic index matches the tangent representation, so the internal anomalies cancel while the rank difference leaves the gravitational anomaly of one...

Xing-Yang Yu · 0 citations

Preprint Sep 2026

Symmetry Descent in M-theory, Part I: A Twelve-Dimensional Parent Theory

We initiate a symmetry descent procedure for M-theory engineered quantum field theories. Starting from a higher form BF theory supplemented by a cubic bulk topological interaction, we construct a gauge-invariant bulk-boundary system whose edge modes acquire generalized Maxwell--Chern--Simons dynamics after the introduc...

Pinak Banerjee, Subham Roy, Xing-Yang Yu · 1 citation