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BEGIN:VEVENT
DTSTAMP:20261019T074733Z
LAST-MODIFIED:20150908T140406Z
DTSTART:20150909T153000Z
DTEND:20150909T163000Z
UID:event1462@bu.edu
URL:http://physics.bu.edu/internal/events/show/1462
SUMMARY:Localization from superselection rules in translation invariant sys
	tems
DESCRIPTION:Featuring Jeongwan Haah\, MIT\n\nPart of the Condensed Matter T
	heory Seminar Series.\n\nAbstract: We study a translation invariant spin mo
	del in a three-dimensional regular lattice\, called the cubic code model\, 
	in the presence of arbitrary extensive perturbations. Below a critical pert
	urbation strength\, we show that most states with finite energy are localiz
	ed; the overwhelming majority of such states have energy concentrated aroun
	d a finite number of defects\, and remain so for a time that is near-expone
	ntial in the distance between the defects. This phenomenon is due to an eme
	rgent superselection rule and does not require any disorder. An extensive n
	umber of local integrals of motion for these finite energy sectors are iden
	tified as well. Our analysis extends more generally to systems with immobil
	e topological excitations.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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