Special ICMT Seminar: "The Haldane phase in spin chains with SU(N) symmetry"
Institute for Condensed Matter Physics
Spin chains with PSU(n) symmetry are known to have symmetry protected topological phases distinguished by boundary states. We determine the parent Hamiltonians of some of these phases at the AKLT point. In the adjoint representation we show a graphical method that enables us to do computations for arbitrary N. Finally we discuss the fate of the Haldane conjecture.
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