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BEGIN:VEVENT

CATEGORIES:Lectures/Conferences
CATEGORIES:Utilities
CATEGORIES:Lecture/Talk
CATEGORIES:Panel/Seminar/Colloquium
CATEGORIES:Conference/Symposium
CATEGORIES:Main
CONTACT;X-BEDEWORK-UID=8a0870ef-48e31cdc-0148-f9b002c2-00006ce8:Solis\, Je
 nnifer
CREATED:20190926T175228Z
DESCRIPTION:Scattering in QCD presents a conundrum: at the hard scattering
  region\,\nwe can have unitary quantum mechanical evolution of a pure sta
 te.\nHowever\, the distribution of radiation observed in the final state\
 noften obeys a semi-classical probability distribution. Typically\, such\
 ncollapse of unitary evolution is explained in terms of decoherence by\na
 n environment coupled to the observed system. However\, in a system\nlike
  e^+e^- --> hadrons\, there is no clear candidate for an external\nbath. 
 I will explain how soft radiation induced in the scattering\ncreates the 
 bath that decoheres the hard scattering degrees of\nfreedom\, and how to 
 calculate the (entanglement)-entropy between the\nhard and soft degrees o
 f freedom as a function of the boundary in\nhilbert space between the two
  regions. We will see that the KLN\ntheorem is flipped on its head\, inst
 ead of being a requirement for a\nwell-defined measurement\, the KLN theo
 rem should be thought of as a\ndynamical process which precisely projects
  out the final states that\ncan be observed after decoherence. Time permi
 tting\, I will comment on\nimplications for jet substructure observables 
 and machine learning\, as\nwell as applications to the structure of the i
 nitial state in DIS.
DURATION:PT1H
DTSTAMP:20191021T141512Z
DTSTART;TZID=America/New_York:20191022T153000
LAST-MODIFIED:20191021T141512Z
LOCATION;X-BEDEWORK-UID=18832edc-1c2ecfef-011c-32333fc8-00000043:Physics 2
 98
STATUS:CONFIRMED
SUMMARY:TNT Colloquium: The Entropy of QCD scattering processes [Duke]
UID:CAL-2c918085-6d6bf4ae-016d-6eb3ec91-00001b14demobedework@mysite.edu
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Main:/user/public-user/Utili
 ties/Main
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Panel_Seminar_Colloquium:/us
 er/public-user/Lectures_Conferences/Panel_Seminar_Colloquium
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Lecture_Talk:/user/public-us
 er/Lectures_Conferences/Lecture_Talk
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Conference_Symposium:/user/p
 ublic-user/Lectures_Conferences/Conference_Symposium
X-BEDEWORK-SPEAKER:Duff Neil (Los Alamos National Lab)
X-BEDEWORK-SUBMITTEDBY:jw190 for Physics (agrp__ArtsandSciences_Physics)
X-BEDEWORK-DUKE-SERIES:Triangle Nuclear Theory Colloquium
END:VEVENT
END:VCALENDAR