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DTSTAMP:20260912T201548Z
LAST-MODIFIED:20201120T171656Z
DTSTART:20201120T170000Z
DTEND:20201120T180000Z
UID:event2380@bu.edu
URL:http://physics.bu.edu/internal/events/show/2380
SUMMARY:Symmetry and topology of quasiparticles and their bound states in c
	orrelated insulators
DESCRIPTION:Featuring Sid Parameswaran\, University of Oxford\n\nPart of th
	e Biophysics/Condensed Matter Seminar Series.\n\n: In this talk\, I explore
	 two examples of how the symmetry of a microscopic lattice or topology of a
	n underlying non-interacting band structure can be imprinted in the excitat
	ions of strongly-correlated insulators. First\, I show that previously-unno
	ticed crystal symmetry constraints drastically alter the understanding of I
	sing quantum criticality in the quasi-1D magnetic insulator CoNb2O6\, resol
	ving decade-old puzzles related to the dispersion of confined `kinks’ in 
	the ordered phase and the decay of spin-flip quasiparticles in the paramagn
	etic phase [1]. I will then change focus to the correlated quantum anomalou
	s Hall insulator recently observed in twisted bilayer graphene near the mag
	ic angle\, where I will discuss the topological properties [2] and many-bod
	y physics [3] of excitonic bound states.\n\nReferences:\n[1] M. Fava\, R. C
	oldea\, and S.A. Parameswaran\, Proc. Nat. Acad. Sci. USA 117\, 25219 (2020
	)..\n[2] Y.H. Kwan\, Y. Hu\, S.H. Simon\, and S.A. Parameswaran\, arXiv:200
	3.11560 (2020). \n[3] Y.H. Kwan\, Y. Hu\, S.H. Simon\, and S.A. Parameswara
	n\, arXiv:2003.11559 (2020).\n\nhttps://bostonu.zoom.us/j/98731662171?pwd=V
	GVvSEZLZUlRa0xNbUgvWGh6THA3Zz09
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
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