Interaction-induced doublons in a ring lattice with OAM map to effective SSH chains and Creutz ladders that support topologically protected edge states.
Let us now con- sider the case of V ̸= V ′ and J0 ̸= J ′ 0 and impose V ′ − V = 3( J ′2 0 − J2 0 )/V in the bulk to make the bulk on-site energy uniform as ϵ2j+1 = ϵ2j [see Eq
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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.