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UID:628713f0a8414e4a6629e5111de55f9a
CATEGORIES:Mathematical Physics Seminar
CREATED:20221020T123828
SUMMARY:Solidity and information
LOCATION:Zoom
DESCRIPTION:The fact that particles can assemble to make a solid, even at high temperat
 ures, becomes more mysterious the more one thinks about it.  In order to re
 sist stress, the number of particles whose positions are coordinated must t
 end to infinity, otherwise limited rearrangements would make flow possible.
  What about systems which, like a glass, seem amorphous? If they are to be 
 true solids, some form of order should be there, but which? In the search o
 f an unambiguous characterization of such hidden order, we soon realize tha
 t the problem is in fact equivalent to devising an image-compression strate
 gy that would allow us to transmit a photo of the configuration (or rather,
  as I will argue, a collection of configurations) in an optimal way. A true
  solid is then an assembly of particles whose configuration has minimal inf
 ormation per particle.\n
X-ALT-DESC;FMTTYPE=text/html:<p>The fact that particles can assemble to make a solid, even at high tempe
 ratures, becomes more mysterious the more one thinks about it.&nbsp; In ord
 er to resist stress, the number of particles whose positions are coordinate
 d must tend to infinity, otherwise limited rearrangements would make flow p
 ossible. What about systems which, like a glass, seem amorphous? If they ar
 e to be true solids, some form of order should be there, but which? In the 
 search of an unambiguous characterization of such hidden order, we soon rea
 lize that the problem is in fact equivalent to devising an image-compressio
 n strategy that would allow us to transmit a photo of the configuration (or
  rather, as I will argue, a collection of configurations) in an optimal way
 . A true solid is then an assembly of particles whose configuration has min
 imal information per particle.</p>
CONTACT:Jorge Kurchan – LPENS, École Normale Supérieure
DTSTAMP:20260829T003006
DTSTART;TZID=America/New_York:20221109T104500
DTEND;TZID=America/New_York:20221109T114500
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