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UID:efef2254dde95f325878a00912b74579
CATEGORIES:Mathematical Physics Seminar
CREATED:20220509T100258
SUMMARY:Memory formation in out of equilibrium systems
LOCATION:Zoom
DESCRIPTION:<p>Out-of-equilibrium systems preserve memories of their formation and trai
 ning history in a variety of ways allowing for an innovative classification
  of material and dynamics. I will discuss one case where a cyclically shear
 ed suspension of particles or a charge-density-wave solid (or even a walk i
 n the park!) remembers multiple values from a series of training inputs yet
  forgets all but two of them at long times despite their continued repetiti
 on; however, if noise is added all the memories can be encoded indefinitely
 ! When the packing density is increased, so that the particles become jamme
 d, the evolution takes place in a very rugged energy landscape where scores
  of local energy minima are visited during each applied oscillation. Nevert
 heless the jammed solid can readily find the periodic orbits. Memory format
 ion in such a system not only sheds light on how glassy ground states are s
 elected and communicate with one another but also shows a form of memory th
 at allows a new probe of the interactions within a material.</p>
CONTACT:Sidney Nagel - The University of Chicago
DTSTAMP:20260929T232859
DTSTART;TZID=America/New_York:20220525T104500
DTEND;TZID=America/New_York:20220525T114500
SEQUENCE:0
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