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arXiv · 1501.00237

Topological properties of a Valence-Bond-Solid

Hui Shao·WenAn Guo·Anders W. Sandvik
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Abstract

We present a projector quantum Monte Carlo study of the topological properties of the valence-bond-solid ground state in the $J$-$Q_3$ spin model on the square lattice. The winding number is a topological number counting the number of domain walls in the system and is a good quantum number in the thermodynamic limit. We study the finite-size behaviour and obtain the domain wall energy density for a topological nontrivial valence-bond-solid state.

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Hui Shao, WenAn Guo, Anders W. Sandvik. 2015-01-01. Topological properties of a Valence-Bond-Solid. https://doi.org/10.1088/1742-6596%2F640%2F1%2F012048

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