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Using a modified spin-wave theory which artificially restores zero sublattice magnetization on finite lattices, we investigate the entanglement properties of the N\'eel ordered $J_1 - J_2$ Heisenberg antiferromagnet on the square lattice.
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2015
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D. J. Luitz, X. Plat, F. Alet, and N. Laflorencie, “Universal logarithmic corrections to entanglement entropies in two dimensions with spontaneously broken continuous symmetries,” Phys. Rev. B 91
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2015
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2015
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