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SUMMARY:On the Energy and Entropy of Surface Defects - Yang Zhou (Fudan Un
 iversity)
DTSTART:20251209T140000Z
DTEND:20251209T150000Z
UID:TALK239302@talks.cam.ac.uk
DESCRIPTION:Surface defects provide a powerful window into strongly couple
 d quantum field theories. In this talk\, I will present closed-form result
 s for how surface defects contribute to the energy and entropy in six-dime
 nsional theories. First\, the defect contribution to twisted R&eacute\;nyi
  entropy takes a remarkably simple form: it is linear in 1/n where n is R&
 eacute\;nyi index\, and controlled entirely by the defect Weyl-anomaly coe
 fficients. I will also describe an equally compact expression for the defe
 ct contribution to the supersymmetric Casimir energy\, which reduces to th
 e known formula in the chiral-algebra limit. These results highlight a pre
 cise bridge between defect conformal anomalies and defect observables rele
 vant to entanglement and Casimir energy.
LOCATION:Seminar Room 1\, Newton Institute
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