Abstract
We show existence of Néel order for the ground state of a system withM two-dimensional layers with spin 1/2 and Heisenberg antiferromagnetic coupling, providedM≥8. The method uses the infrared bounds for the ground state combined with ideas introduced by Kennedy, Lieb, and Shastry.
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References
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Communicated by T. Kemedy
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Parreira, J.R., Bolina, O. & Perez, J.F. Néel order in the ground state of spin-1/2 Heisenberg antiferromagnetic multilayer systems. J Stat Phys 86, 1367–1371 (1997). https://doi.org/10.1007/BF02183628
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DOI: https://doi.org/10.1007/BF02183628