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DTSTAMP:20261019T033702Z
LAST-MODIFIED:20160407T153324Z
DTSTART:20160504T150000Z
DTEND:20160504T170000Z
UID:event1593@bu.edu
URL:http://physics.bu.edu/internal/events/show/1593
SUMMARY:Particle-hole symmetric phases in multicomponent Landau levels
DESCRIPTION:Featuring Inti Sodemann\, MIT\n\nPart of the Condensed Matter T
	heory Seminar Series.\n\nAbstract: The picture of fractional quantum Hall s
	tates as liquids of composite particles made from electrons bound to fluxes
	 has evolved over the years as a central paradigm in the understanding of t
	hese phases. A recent proposal on the compressible phase that arises in hal
	f-filled Landau levels allows to consistently incorporate the particle-hole
	 symmetry by viewing the composite fermion as a Dirac particle. In turn\, t
	he natural habitat for this Dirac composite fermion is the surface of a chi
	ral topological insulator protected by an anti-unitary particle-hole symmet
	ry with a single Dirac cone. In this talk I will describe generalizations o
	f these ideas to the case of N-component landau levels\, such as those aris
	ing in quantum Hall bilayers (N=2) and graphene (N=4). When multi-component
	 Landau levels are half filled they can be viewed as the surface of a chira
	l topological insulator with N Dirac cones. I will describe gapped phases t
	hat respect the particle-hole symmetry and are topologically ordered and di
	scuss their potential experimental realization.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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