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SUMMARY:Defects and Anomalies in Quantum Field Theories - Yifan Wang (Harv
 ard)
DTSTART:20210603T133000Z
DTEND:20210603T143000Z
UID:TALK159085@talks.cam.ac.uk
CONTACT:Pietro Benetti Genolini
DESCRIPTION:I will review some recent developments in understanding the st
 ructure of anomalies in the presence of defects in CFTs. The defect insert
 ions lead to new 't Hooft anomalies and conformal anomalies on the defect 
 worldvolume. The latter give rise to defect analogs of the c-theorem (a-th
 eorem) which establish the monotonicity of defect RG flows. With supersymm
 etry\,  the defect conformal anomalies are related to the 't Hooft anomali
 es for certain U(1) R-symmetry in a simple way\, and can be determined non
 -perturbatively from an algebraic procedure. In the talk I'll mostly focus
  on surface defects to be concrete and comment on extensions and future di
 rections towards the end.
LOCATION:Online (Zoom)
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