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BEGIN:VEVENT
DTSTAMP:20260815T080636Z
LAST-MODIFIED:20180924T142529Z
DTSTART:20180926T190000Z
DTEND:20180926T200000Z
UID:event2019@bu.edu
URL:http://physics.bu.edu/internal/events/show/2019
SUMMARY:Topological magnon bands and effective Hamiltonians for periodicall
	y driven systems
DESCRIPTION:Featuring Greg Fiete\, Northeastern University\nHosted by: Anus
	hya Chandran\n\nPart of the Condensed Matter Theory Seminar Series.\n\nThe 
	effect of spin-orbit coupling in condensed matter systems has received inte
	nse study over the past decade\, most notably in the context of topological
	 band insulators where electron-electron interactions are not essential for
	 the topological properties.  In this talk\, I will focus on the opposite l
	imit of strong electronic correlations with spin-orbit coupling.  I will de
	scribe two different (materials motivated) two-dimensional models in which 
	the spin-orbit coupling leads to topological band structure in the magnetic
	 excitations.  In the second part of the talk\, I will turn to recent work 
	describing an approach to achieving effective time-independent Hamiltonians
	 for periodically driven\, interacting many-particle systems.  The method a
	grees with the Magnus expansion in the high frequency limit\, but appears t
	o also work well in the strong-driving\, low-frequency limit.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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