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TZID:Europe/Paris
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UID:0-816@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20220510T110000
DTEND;TZID=Europe/Paris:20220510T120000
DTSTAMP:20220428T120229Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-tommaso-roscilde-ens-lyon/
SUMMARY:Séminaire du LPTMS :  Tommaso Roscilde (ENS Lyon) - Salle des sém
 inaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 10 Mai 22 11:00
DESCRIPTION:Many-body entanglement: a look from the tower (of states)\nTomm
 aso Roscilde (Ecole Normale Supérieure de Lyon)\n\nHybrid seminar: onsite
  + zoom.\n\nhttps://cnrs.zoom.us/j/93722201378?pwd=c2hMZDE5N09GQlBqSkc0RFh
 vYllWdz09\nMeeting ID: 937 2220 1378\nPasscode: 9xJxgQ\n\nThe non-equilibr
 ium dynamics of many-body quantum systems is among the most effective mech
 anisms for the production of entanglement. The general paradigm of entangl
 ement dynamics involves the propagation of finite-momentum quasi-particle 
 excitations\, which propagate ballistically and generate correlations with
 in a causal cone around every point in space. In fact this picture is rath
 er incomplete\, as it neglects the existence of zero-momentum excitations:
  such excitations are dominant at low energy in systems breaking spontaneo
 usly a continuous symmetry\, and they form the so-called Anderson tower of
  states. In this talk I will discuss how the low-energy tower of states in
  spin models can be effectively described within an approximate separation
  of variables between finite- and zero-momentum excitations\; and how such
  states are responsible for the dramatic entanglement dynamics observed in
  U(1) symmetric models -- most importantly\, dipolar spin systems realized
  in Rydberg-atom arrays -- which develop a cascade of multipartite entangl
 ed states completely missed by any quasiparticle picture.  \n\n
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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