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BEGIN:VEVENT
DTSTAMP:20260912T074817Z
LAST-MODIFIED:20210303T181738Z
DTSTART:20210324T150000Z
DTEND:20210324T160000Z
UID:event2408@bu.edu
URL:http://physics.bu.edu/internal/events/show/2408
SUMMARY:Topological Effects of Quasiperiodic Driving
DESCRIPTION:Featuring David Long\, Boston University\, Physics Department\n
	\nPart of the Preliminary Oral Exam.\n\nTopology can underlie the quantizat
	ion of observables in both static and driven systems\, including quasiperio
	dically driven systems - those driven by multiple incommensurate periodic t
	ones. We derive a topological classification of a class of quasiperiodicall
	y driven systems which we call anomalous localized topological phases (ALTP
	s). The classification depends only on the sum of the spatial dimension and
	 the number of incommensurate tones\, a result we can understand intuitivel
	y through a formalism known as the frequency lattice. Furthermore\, our cla
	ssification allows us to identify a phase of one-dimensional two-tone-drive
	n ALTPs which can act as a quantized nonadiabatic energy pump between the t
	wo drives. We present explicit models in this phase\, with which we verify 
	our predictions numerically.
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
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