Abstract
A renormalization procedure gives a rigorous upper bound for the ground-state energy per spin for a Peierls-distorted antiferromagnetic chain with Heisenberg interaction.
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van de Braak, H.P., Caspers, W.J., Wiegel, F.W. et al. An exact limit for the Peierls distortion energy in an antiferromagnetic chain by means of a renormalization procedure. J Stat Phys 18, 577–584 (1978). https://doi.org/10.1007/BF01014480
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DOI: https://doi.org/10.1007/BF01014480