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DTSTART:20070311T020000
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DTSTAMP:20260217T111612
DTSTART;TZID=America/Detroit:20260218T130000
DTEND;TZID=America/Detroit:20260218T140000
SUMMARY:Lecture / Discussion:HET Brown Bag Seminar | Bulk Locality from Infrared Entanglement
DESCRIPTION:For quantum field theories coupled to any massless fields\, one generally encounters “IR divergences” which arise due to the fact that the asymptotic description of the state contains an infinite number of soft radiative quanta. These quanta have recently gained interest due to their connections to unitarity\, asymptotic symmetries and the memory effect. However\, for the description of any bulk experiment\, these quanta are generally viewed as a nuisance with little physical relevance for the predictions of any bulk\, finite time observable.\n\nIn this talk\, I will explain that this is not the case. In fact\, the situation is quite the opposite: all local physical observables and phenomena depend on the entanglement and absorption of soft radiation. I will explain (1) how this phenomenon arises and (2) why it was missed in the literature and (3) why this result agrees with the predictions of collider experiments. I will primarily focus on the case of QED with and will comment on the analogous issues in QED with massless electrons\, Yang-Mills theories and Quantum Gravity.
UID:143132-21892189@events.umich.edu
URL:https://events.umich.edu/event/143132
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Brown Bag Seminar,Talk,Science,Physics,Lecture,brown bag
LOCATION:Randall Laboratory - 3481
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260123T121714
DTSTART;TZID=America/Detroit:20260218T132000
DTEND;TZID=America/Detroit:20260218T135000
SUMMARY:Performance:Eva Albalghiti\, carillon
DESCRIPTION:Eva Albalghiti performs on the Ann & Robert H. Lurie Carillon\, an instrument of 60 bells with the lowest bell (bourdon) weighing 6 tons.\n\nThirty-minute recitals are performed on the Lurie Carillon every weekday that classes are in session. During these recitals\, visitors may take the elevator to level 2 to view the largest bells\, or to level 3 to see the carillonist performing. (Visitors subject to acrophobia are recommended to visit level 2 only.) An optional spiral stairway between levels 2 and 3 allows for up-close views of some of the largest bells.
UID:144373-21895243@events.umich.edu
URL:https://events.umich.edu/event/144373
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Free,Music,North Campus
LOCATION:Lurie Ann & Robert H. Tower
CONTACT:
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