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- W1655413255 abstract "The Heisenberg chain with antiferromagnetic, powerlaw exchange has a quantum phase transition separating spin liquid and Neel ordered phases at a critical value of the powerlaw exponent alpha. The behaviour of the system can be explained rather simply in terms of a resonating valence bond state in which the amplitude for a bond of length r goes as r^{-alpha} for alpha 3. Numerical evaluation of the staggered magnetic moment and Binder cumulant reveals a second order transition at alpha_c = 2.18(5), in excellent agreement with quantum Monte Carlo. The divergence of the magnetic correlation length is consistent with an exponent nu = 2/(3-alpha_c) = 2.4(2)." @default.
- W1655413255 created "2016-06-24" @default.
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- W1655413255 date "2007-09-27" @default.
- W1655413255 modified "2023-09-27" @default.
- W1655413255 title "Valence bond description of the long-range, nonfrustrated Heisenberg chain" @default.
- W1655413255 hasPublicationYear "2007" @default.
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