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SUMMARY:Rewarding defects - Nadav Drukker (King's College London)
DTSTART:20251111T140000Z
DTEND:20251111T153000Z
UID:TALK240460@talks.cam.ac.uk
DESCRIPTION:I will present a formalism for deriving Ward-Takahashi identit
 ies for correlation functions on (conformal) defects. Defects break part o
 f the symmetries of the ambient theory\; always the spacetime symmetries a
 nd sometimes also internal symmetries. The symmetry persists\, though now 
 it is nonlinearly realised. After reviewing the definition of tilt and dis
 placement operators and discussing the linear action\, I will explain how 
 non-linear relations are encoded. The formalism allows to derive new ident
 ities for correlation functions of operators on defects and\, time permitt
 ing\, I will present some applications of those identities.
LOCATION:Seminar Room 2\, Newton Institute
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