BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261021T123149Z
LAST-MODIFIED:20171031T145208Z
DTSTART:20171106T160000Z
DTEND:20171106T170000Z
UID:event1853@bu.edu
URL:http://physics.bu.edu/internal/events/show/1853
SUMMARY:"Polarization\, Large Gauge Invariance\, and Quantum Hall Effect on
	 Lattice"
DESCRIPTION:Featuring Masaki Oshikawa\, University of Tokyo\nHosted by: And
	ers Sandvik\n\nPart of the Condensed Matter Theory Seminar Series.\n\nQuant
	um systems on a non-simply connected space possess a\n"large" gauge invaria
	nce. Laughlin utilized this to explain quantum\nHall effect. Later\, it was
	 applied to elucidate a universal relation\nbetween filling factor and ener
	gy spectrum in quantum many-body\nsystems on periodic lattices (Lieb-Schult
	z-Mattis-M.O.-Hastings).\nSomewhat surprisingly\, the large gauge invarianc
	e is also deeply\nrelated to modern theory of electric polarization develop
	ed by\nResta et al. Combining these ideas together\, we can derive a constr
	aint\non the Hall conductivity of a many-particle system on a periodic\nlat
	tice\, with a given magnetic flux per plaquette and particle density.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR