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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260826T124442Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20121017T180000Z
DTEND:20121017T190000Z
UID:event1006@bu.edu
URL:http://physics.bu.edu/internal/events/show/1006
SUMMARY:Universally slow: Aging in glassy systems 
DESCRIPTION:Featuring Dr. Ariel Amir\, Harvard University\n\nPart of the Co
	ndensed Matter Theory Seminar Series.\n\nAbstract:  Glassy systems are
	 ubiquitous in nature\, from window glasses\, through the anomalous magneti
	c properties of spin-glasses\, to memory effects observed in electronic sys
	tems. Among their key properties are slow relaxations to equilibrium withou
	t a typical timescale and aging\, the dependence of relaxation on the syste
	m's age. Understanding these phenomena is a long-standing problem in physic
	s. After reviewing aging in various physical systems\, I will describe our 
	approach to the problem\, and show how it leads to a particular form of agi
	ng\, corroborated in various experimental systems such as electron glasses\
	, porous semiconductors and structural glasses. The aging results from a br
	oad distribution of relaxation rates\, which within the theoretical framewo
	rk are the eigenmodes of a linearized dynamical matrix. Finally\, I will di
	scuss recent results on the structure and localization properties of these 
	relaxation eigenmodes\, and their implications.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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