works on
asymptotic symmetries 1black hole horizons 1edge observables 1null boundaries 1soft charges 1zero modes 1

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1 paper

hep-th2026

Soft charges and zero modes at null boundaries

DuÅ¡an Đorđević, Dušan Đorđević, Olivera Miskovic +3

The paper investigates how a global zero-mode ambiguity on null boundaries, including null infinity and black‑hole horizons, changes the canonical structure of field theories and i…