Pretopological fractional excitations in the two-leg flux ladder
Marcello Calvanese Strinati,
Sharmistha Sahoo,
Kirill Shtengel
et al.
Abstract:Topological order, the hallmark of fractional quantum Hall states, is primarily defined in terms of ground-state degeneracy on higher-genus manifolds, e.g. the torus. We investigate analytically and numerically the smooth crossover between this topological regime and the Tao-Thouless thin torus quasi-1D limit. Using the wire-construction approach, we analyze an emergent charge density wave (CDW) signifying the break-down of topological order, and relate its phase shifts to Wilson loop operators. The CDW amplit… Show more
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