Duality-Symmetry Enhancement in Maxwell Theory
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Abstract
Free Maxwell theory on general four-manifolds may, under certain conditions on the background
geometry, exhibit holomorphic factorization in its partition function. We show
that when this occurs, new discrete symmetries emerge at orbifold points of the conformal
manifold. These symmetries, which act only on a sublattice of flux configurations, are
not associated with standard dualities, yet they may carry ’t Hooft anomalies, potentially
causing the partition function to vanish even in the absence of apparent pathologies. We
further explore their non-invertible extensions and argue that their anomalies can account
for zeros of the partition function at smooth points in the moduli space
Description
SISSA 03/2025 FISI