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• W1658867433 abstract "We perform a systematic investigation on the hexagon-singlet solid (HSS) states, which are a class of spin liquid candidates for the spin-1 kagome antiferromagnet. With the Schwinger boson representation, we show that all HSS states have exponentially decaying correlations and can be interpreted as a (special) subset of the resonating Affleck-Kennedy-Lieb-Tasaki (AKLT) loop states. We provide a compact tensor network representation of the HSS states, with which we are able to calculate physical observables efficiently. We find that the HSS states have vanishing topological entanglement entropy, suggesting the absence of intrinsic topological order. We also employ the HSS states to perform a variational study of the spin-1 kagome Heisenberg antiferromagnetic model. When we use a restricted HSS ansatz preserving lattice symmetry, the best variational energy per site is found to be $e_0 = -1.3600$. In contrast, when allowing lattice symmetry breaking, we find a trimerized simplex valence bond crystal with a lower energy, $e_0=-1.3871$." @default.
• W1658867433 created "2016-06-24" @default.
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• W1658867433 date "2015-06-11" @default.
• W1658867433 modified "2023-10-16" @default.
• W1658867433 title "Hexagon-singlet solid ansatz for the spin-1 kagome antiferromagnet" @default.
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• W1658867433 doi "https://doi.org/10.1103/physrevb.91.224414" @default.
• W1658867433 hasPublicationYear "2015" @default.
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