Conjectures an asymptotic formula for the Haldane gap at large integer spins and reports that topological order in the spin-1 chain vanishes smoothly in ladders without a phase transition.
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Physics of integer spin antiferromagnetic chains : Haldane gaps and edge states
Conjectures an asymptotic formula for the Haldane gap at large integer spins and reports that topological order in the spin-1 chain vanishes smoothly in ladders without a phase transition.