Topological two-body bound states in the interacting Haldane model

G Salerno, M Di Liberto, C Menotti, I Carusotto - Physical Review A, 2018 - APS
Physical Review A, 2018APS
We study the topological properties of the two-body bound states in an interacting Haldane
model as a function of interparticle interactions. In particular, we identify topological phases
where the two-body edge states have either the same or the opposite chirality as compared
to single-particle edge states. We highlight that in the moderately interacting regime, which
is relevant for the experimental realization with ultracold atoms, the topological transition is
affected by the internal structure of the bound state, and the phase boundaries are …
We study the topological properties of the two-body bound states in an interacting Haldane model as a function of interparticle interactions. In particular, we identify topological phases where the two-body edge states have either the same or the opposite chirality as compared to single-particle edge states. We highlight that in the moderately interacting regime, which is relevant for the experimental realization with ultracold atoms, the topological transition is affected by the internal structure of the bound state, and the phase boundaries are consequently deformed.
American Physical Society
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