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Bifurcation in ground-state fidelity for a one-dimensional spin model with competing two-spin and three-spin interactions

A one-dimensional quantum spin model with the competing two-spin and three-spin interactions is investigated in the context of a tensor network algorithm based on the infinite matrix product state representation. The algorithm is an adaptation of Vidal's infinite time-evolving block decimation algorithm to a translation-invariant one-dimensional lattice spin system involving three-spin interactions. The ground-state fidelity per lattice site is computed, and its bifurcation is unveiled, for a few selected values of the coupling constants. We succeed in identifying critical points and deriving local order parameters to characterize different phases in the conventional Ginzburg-Landau-Wilson paradigm.

preprint2011arXivOpen access
Hong-Lei WangYan-Wei DaiBing-Quan HuHuan-Qiang Zhou
cond-mat.stat-mech
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Hong-Lei WangYan-Wei DaiBing-Quan HuHuan-Qiang Zhou

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