Multihole edge states in Su-Schrieffer-Heeger chains with interactions
Multihole edge states in Su-Schrieffer-Heeger chains with interactions
We address the effect of nearest-neighbor (NN) interactions on the topological properties of the Su-Schrieffer-Heeger (SSH) chain, with alternating hopping amplitudes ${t}_{1}$ and ${t}_{2}$. Both numerically and analytically, we show that the presence of interactions induces phase transitions between topologically different regimes. In the particular case of one-hole excitations in …