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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2292
DTSTART:20120426T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T062337Z
LAST-MODIFIED:20120416T204402Z
LOCATION:5310 Chamberlin
SUMMARY:"Rare" Fluctuations and the Anderson Model of Localization\, R
 . G. Herb Condensed Matter Seminar\, Ravin Bhatt\, Princeton Universit
 y
DESCRIPTION:It has been over fifty years since Anderson's original pap
 er reporting the discovery of the absence of diffusion in random latti
 ces\, and over three decades since the metal-insulator transition was 
 understood in terms of the scaling theory of localization. Despite thi
 s long time interval\, and thousands of publications on the subject\, 
 the Anderson model of localization continues to offer new insights. In
  this talk we examine the Anderson model at large disorder (i.e. in th
 e insulating phase). We find\, surprisingly\, new singularities in thi
 s regime\, which had apparently escaped attention. These singularities
  appear to demarcate the boundary between "typical" and "rare fluctuat
 ion" states. (The latter are the counterpart of rare fluctuation effec
 ts found to be quite pervasive in quantum many-body models with large 
 disorder). Besides exposing a new facet of a seemingly simple and exte
 nsively studied model\, our work suggests that Anderson's model of loc
 alization offers an unparalleled opportunity to understand rare fluctu
 ation effects at a level of detail that has not been possible in numer
 ical approaches to many-body models. 
URL:https://www.physics.wisc.edu/events/?id=2292
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