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SUMMARY:Universal phase transitions in topological lattice models - Dr Fio
 na Burnell (All Souls\, Oxford)
DTSTART:20100610T131500Z
DTEND:20100610T144500Z
UID:TALK24068@talks.cam.ac.uk
CONTACT:Joe Bhaseen
DESCRIPTION:It has been known for several years that it is possible to con
 struct exactly solvable lattice models in 2+1 dimensions which realize a w
 ide range of `topological' phases\, which can be distinguished by their di
 fferent `topological orders' characterizing the exotic statistics of the e
 xcitations which such phases exhibit.  I will focus on a particular class 
 of these models\, and describe a general prescription of how to tune the H
 amiltonian through a condensation transition\, resulting in a new topologi
 cal phase with non-trivial topological order.  An intriguing feature of th
 ese transitions is that\, for all of the models in the class I will discus
 s\, the dynamics of the phase transition is that of the transverse field I
 sing model.  \n\n
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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