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SUMMARY:Dynamics of scrambling of information\, from shock waves to Fisher
 -KPP
DTSTART:20230510T121500
DTEND:20230510T140000
DTSTAMP:20261001T022132Z
UID:d0e758daa7fbd2b186e43d14eadeafd8143724f6e404d4edeb1726e4
CATEGORIES:Conferences - Seminars
DESCRIPTION:Camille Aron\nInformation scrambling is the mechanism by which
  localized information in an extended system flows to non-local degrees of
  freedom\, becoming practically irretrievable. It proceeds via two mechani
 sms\, namely a rapid loss and a spatial spreading of information\, which c
 an sometimes be associated with the concepts of Lyapunov exponent and butt
 erfly velocity\, respectively.\n\nIn this presentation\, I will provide a 
 partial overview of the field of quantum chaos and discuss our current und
 erstanding of the phenomenon of scrambling in thermalizing systems. I will
  explain how conventional tools of quantum transport theory can be adapted
  to derive a large-scale effective kinetic theory of scrambling. More spec
 ifically\, I will focus on the case of realistic metals that experience bo
 th inelastic scattering due to interactions and elastic scattering due to 
 disorder. I will demonstrate that disorder drives a phase transition in th
 e scrambling dynamics\, from shock-wave dynamics to dynamics belonging to 
 the Fisher or Kolmogorov–Petrovsky–Piskunov class. More generally\, th
 is approach can be used to gain insight into the mysterious relationship b
 etween transport properties and chaos.
LOCATION:BSP 234 https://plan.epfl.ch/?room==BSP%20234
STATUS:CONFIRMED
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