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SUMMARY:Entanglement spectra: A novel spectroscopic tool to investigate qu
 antum many body wave functions - Prof. Andreas Läuchli\, Universität Inn
 sbruck
DTSTART:20130221T141500Z
DTEND:20130221T151500Z
UID:TALK42351@talks.cam.ac.uk
CONTACT:Dr G Moller
DESCRIPTION:The entanglement spectrum\, ie the logarithm of the eigenvalue
 s of reduced density matrices of quantum\nmany body wave functions\, has b
 een the focus of a rapidly expanding research endeavor recently.\nInitiall
 y introduced by Li & Haldane in the context of the fractional quantum Hall
  effect\, its usefulness has\nbeen shown to extend to many more fields\, s
 uch as topological insulators\, fractional Chern insulators\,\nspin liquid
 s\, continuous symmetry breaking states\, etc.\nAfter a general introducti
 on to the field we review some of our own contributions to the field\, in 
 particular\nthe perturbative structure of the entanglement spectrum in gap
 ped phases\, the entanglement spectrum\nacross the Mott-insulator transiti
 on in the Bose-Hubbard model\, and the relation of the entanglement spectr
 um\nof (1+1) dimensional quantum critical systems to the operator content 
 of their underlying CFT.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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