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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260814T223735Z
LAST-MODIFIED:20121204T150618Z
DTSTART:20121212T190000Z
DTEND:20121212T200000Z
UID:event1028@bu.edu
URL:http://physics.bu.edu/internal/events/show/1028
SUMMARY:Avalanches\, Disorder\, and Universality in Condensed Matter
DESCRIPTION:Featuring Karin Dahmen\, University of Illinois\, Urbana-Champa
	ign\nHosted by: David Campbell\n\nPart of the Condensed Matter Theory Semin
	ar Series.\n\nAbstract:\nAn overview is given on recent progress in the stu
	dy of avalanches in a number of experimental systems and in models having d
	isorder. In particular\, we show how recent studies on magnetizing avalanch
	es (''Barkhausen noise'') in magnets (driven by a slowly increasing magneti
	c field) shed light on modeling damage avalanches in other systems\, such a
	s the plastic depinning of charge density waves\, the statistics of earthqu
	akes in irregularly shaped fault zones and other systems characterized by '
	'crackling noise''. In particular\, we focus on the universal\, i.e.\, deta
	il independent\, effects of disorder in these cases. Unexpected connections
	 between nonequilibrium and equilibrium ''avalanches'' reveal a surprisingl
	y large universality class of systems that all show the same scaling behavi
	or on long length scales. This universality class includes driven far-from-
	equilibrium behavior (for various histories)\, and the equilibrium behavior
	 of some of these systems. The studies draw on methods from the theory of p
	hase transitions\, the renormalization group\, and numerical simulations.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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