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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260828T175548Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20100929T140000Z
DTEND:20100929T150000Z
UID:event704@bu.edu
URL:http://physics.bu.edu/internal/events/show/704
SUMMARY:Revivals of a closed quantum system and Lieb-Robinson speed
DESCRIPTION:Featuring Alioscia Hamma\, Perimeter Institute\, Canada\n\nPart
	 of the Condensed Matter Theory Seminar Series.\n\nAbstract:\nWe study the 
	structure of the revivals in a closed quantum many body system away from eq
	uilibrium\, after a quantum quench. If the Hamiltonian is local\, there exi
	sts an effective light cone given by the maximum speed of signals $v_{LR}$ 
	in the system. We study the nonequilibrium dynamics by means of the Loschmi
	dt echo (LE)\, magnetization and entanglement.  We find that the revival ti
	mes are given by the size of the system divided by the Lieb-Robinson speed.
	 As a concrete example\, we study the XY spin chain in a transverse field.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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