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- W2395859233 abstract "We study the entanglement structure and the topological edge states of the ground state of the spin-1/2 XXZ model with bond alternation. We employ parity-density matrix renormalization group with periodic boundary conditions. The finite-size scaling of R'enyi entropies $S_2$ and $S_infty$ are used to construct the phase diagram of the system. The phase diagram displays three possible phases: Haldane type (an example of symmetry protected topological ordered phases), Classical Dimer and N'eel phases, the latter bounded by two continuous quantum phase transitions. The entanglement and non-locality in the ground state are studied and quantified by the entanglement convertibility. We found that, at small spatial scales, the ground state is not convertible within the topological Haldane dimer phase. The phenomenology we observe can be described in terms of correlations between edge states. We found that the entanglement spectrum also exhibits a distinctive response in the topological phase: the effective rank of the reduced density matrix displays a specifically large susceptibility in the topological phase. These findings support the idea that although the topological order in the ground state cannot be detected by local inspection, the ground state response at local scale can tell the topological phases apart from the non-topological phases." @default.
- W2395859233 created "2016-06-24" @default.
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- W2395859233 date "2016-05-24" @default.
- W2395859233 modified "2023-09-24" @default.
- W2395859233 title "Entanglement convertibility by sweeping through the quantum phases of the alternating bonds XXZ chain" @default.
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- W2395859233 doi "https://doi.org/10.1038/srep26453" @default.
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