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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-8485
DTSTART:20240202T213000Z
DTEND:20240202T230000Z
DTSTAMP:20260413T223351Z
LAST-MODIFIED:20240130T001942Z
LOCATION:Chamberlin 2241
SUMMARY:Effective field theories of thermalizing systems\, Physics Dep
 artment Colloquium\, Luca Delacretaz\, University of Chicago
DESCRIPTION:Hydrodynamics – broadly understood as the late-time dyna
 mics of conserved densities – is distinguished by its sparing assump
 tion: thermalization. Its applications are therefore widespread\, rang
 ing from spin chains to galaxies. I will argue that hydrodynamics shou
 ld be viewed as an effective field theory\, similar to chiral perturba
 tion theory in particle physics. This perspective allows for precision
  tests of thermalization in many-body systems\, offers guidance and be
 nchmarks for costly quantum simulations\, and leads to surprising pred
 ictions including "diffusion cascades" and large density fluctuations 
 in quantum Hall edges. I will end by showing how these effective field
  theory techniques can be used to prove a conjectured "Planckian bound
 " on thermalization: the equilibration time of many-body systems canno
 t be shorter than the quantum limit \\hbar/T.
URL:https://www.physics.wisc.edu/events/?id=8485
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