Dark solitons in nonlinear SSH lattices preserve intensity dips on constant backgrounds in semi-infinite or finite gaps and show linear stability when intracell coupling greatly exceeds intercell coupling.
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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.
Interaction-induced doublons in a ring lattice with OAM map to effective SSH chains and Creutz ladders that support topologically protected edge states.
citing papers explorer
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Dark solitons in nonlinear Su-Schrieffer-Heeger lattices
Dark solitons in nonlinear SSH lattices preserve intensity dips on constant backgrounds in semi-infinite or finite gaps and show linear stability when intracell coupling greatly exceeds intercell coupling.
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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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Topological bound states in a lattice of rings with nearest-neighbour interactions
Interaction-induced doublons in a ring lattice with OAM map to effective SSH chains and Creutz ladders that support topologically protected edge states.