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SUMMARY:Chris Mitsch (Bucknell University)
DTSTART:20240919T130000Z
DTEND:20240919T150000Z
DTSTAMP:20260417T072503Z
UID:3cqfs/28
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/3cqfs/28/">S
 ome Lessons from Haag's Theorem</a>\nby Chris Mitsch (Bucknell University)
  as part of Tricontinental Quantum Fundamentals Seminar\n\n\nAbstract\nHaa
 g’s theorem is a classic no-go theorem: it rigorously demonstrates that 
 there is a conflict between the interaction picture and other basic\, intu
 itive-seeming assumptions in QFT. The precise significance of the theorem 
 continues to be debated\, however. I will focus on two big-picture questio
 ns in this talk. First\, why are there multiple\, distinct responses to Ha
 ag's theorem? Here I will compare and contrast these and\, in so doing\, a
 rticulate the methodological choices motivating them. Second\, if our goal
  is building usable models of phenomena\, why should we care about esoteri
 c results like Haag's theorem? Here I will draw on an analogous result in 
 the social sciences to make the case that results like Haag's theorem help
  us organize models' varied applications and prioritize investigations in 
 model development.\n
LOCATION:https://researchseminars.org/talk/3cqfs/28/
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