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Event Detail Information

Event Detail Information

Physics Colloquium:"Speak, Memory! What can a material memorize?"

Speaker Professor Sidney R. Nagel, University of Chicago
Date Oct 24, 2012
Time 4:00 pm  
Location 141 Loomis Lab
Sponsor Physics Department
Contact Marjorie Gamel
Phone 217-333-3762
Event type Physics Colloquium
Views 5523
Originating Calendar Physics - Colloquium
Out-of-equilibrium disordered systems may preserve a memory of external driving that can be read out at a later time. I will present one form of memory that does this in a remarkable fashion. The system remembers multiple values from a series of training inputs yet forgets nearly all of them at long times despite a continual repetition of the inputs. However, if noise is added to the system, all the memories can be preserved indefinitely. This provides a concrete example of 'plasticity' in memory formation. Despite these surprising features, the cause of this memory formation is easily understood and appears to be generic.
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