In disordered variants of the Su-Schrieffer-Heeger model, the entanglement entropy difference ΔS^A between half-filled and near-half-filled ground states is zero in the topological phase and finite in the trivial phase, providing a robust diagnostic that can outperform the topological invariant Q.
Wen, Colloquium: Zoo of quantum-topological phases of matter, Rev
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A quantum Monte Carlo approach using the correlation density matrix detects dominant correlations in many-body systems without prior knowledge.
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Entanglement entropy as a probe of topological phase transitions
In disordered variants of the Su-Schrieffer-Heeger model, the entanglement entropy difference ΔS^A between half-filled and near-half-filled ground states is zero in the topological phase and finite in the trivial phase, providing a robust diagnostic that can outperform the topological invariant Q.
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Detecting the Largest Correlations using the Correlation Density Matrix: a Quantum Monte Carlo Approach
A quantum Monte Carlo approach using the correlation density matrix detects dominant correlations in many-body systems without prior knowledge.