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Many-body Aharonov-Bohm caging in a lattice of rings
We study a system of a few ultracold bosons loaded into states with orbital angular momentum $l=1$ of a one-dimensional staggered lattice of rings. Local eigenstates with winding numbers $+l$ and $\ensuremath{-}l$ form a Creutz ladder with a real dimension and a synthetic one. States with opposite winding numbers in …