BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Abhishek Roy\, Institute for Theoretical Physics\, University o f Cologne\n\n
Spin chains with PSU(n) symmetry are known to have symmetr y protected topological phases distinguished by boundary states. We determ ine the parent Hamiltonians of some of these phases at the AKLT point. In the adjoint representation we use a graphical method that produces express ions for arbitrary N. Finally we discuss the fate of the Haldane conjectur e.
\n DTSTART:20170323T150000Z LOCATION:Physics Building\, Room 313 SUMMARY:The Haldane phase in spin chains with SU(N) symmetry END:VEVENT END:VCALENDAR