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SUMMARY:Ying-Hsuan Lin (Harvard)
DTSTART:20210222T193000Z
DTEND:20210222T203000Z
DTSTAMP:20260423T010250Z
UID:PUHET/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/PUHET/12/">L
 orentzian Dynamics and Factorization Beyond Rationality</a>\nby Ying-Hsuan
  Lin (Harvard) as part of Princeton HET seminar\n\n\nAbstract\nI motivate 
 my talk with three questions in (1+1)d CFT: (1) What is the interpretation
  of correlators in neither Euclidean nor Lorentzian regime? (2) Is there a
  connection between Lorentzian dynamics and line operators? (3) Can the Ve
 rlinde algebra be made sense of in irrational theories? I will argue that 
 the answer to (3) is "yes"\, and via (2) this "algebra" can put nontrivial
  unitarity bounds ("opacity bound") on the conformal Regge limit of four-p
 oint functions. Topological defect lines play a key role in this story. Mo
 re details can be found in my paper 2012.01429.\n
LOCATION:https://researchseminars.org/talk/PUHET/12/
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