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BEGIN:VEVENT
DTSTAMP:20260910T201527
DTSTART;TZID=America/Detroit:20260916T120000
DTEND;TZID=America/Detroit:20260916T130000
SUMMARY:Lecture / Discussion:HET Brown Bag Seminar | Regge’s Inferno
DESCRIPTION:We study large-spin operators in conformal field theories (CFTs) in spacetime dimensions d>2 by placing the theory on appropriate pp-wave backgrounds. We show that these geometries admit Heisenberg-group symmetries\, and that these symmetries\, combined with locality of quantum fields on such spacetimes\, impose strong constraints on the asymptotic spectrum in the large-spin limit. The pp-wave backgrounds probe both the small-twist regime\, corresponding to the Regge or light-cone bootstrap\, and a strongly coupled regime of large twist. Finally\, we demonstrate that causality (or the requirement that the energy be bounded from below) leads to a new unitarity bound in 3+1dimensions.
UID:151078-21910840@events.umich.edu
URL:https://events.umich.edu/event/151078
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Science,brown bag,Brown Bag Seminar,Lecture,Physics
LOCATION:Randall Laboratory - 3481
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260910T154938
DTSTART;TZID=America/Detroit:20260916T120000
DTEND;TZID=America/Detroit:20260916T130000
SUMMARY:Meeting:International Research Hub Lunch
DESCRIPTION:The International Research Hub invites Institute for Social Research (ISR) researchers engaged in international work for an informal discussion on key topics: 1) updating each other on current NIH-funded international projects\; 2) updates about NIH funding mechanisms for international research\; and 3) open discussion of alternative funding sources for international research. \n\nThe Hub will provide lunch on September 16 from 12:00-1:00 pm on the 6th floor at ISR (426 Thompson St.\, Room 6050). Please RSVP before September 11\, 2026. (If you’re unable to attend and are interested in future participation\, please let us know through the RSVP form.)
UID:150737-21910019@events.umich.edu
URL:https://events.umich.edu/event/150737
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Research,Social Sciences,International
LOCATION:Institute For Social Research - 6050
CONTACT:
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