Microscopic Theory of the Two-Dimensiona
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V.I. Belinicher; J. da ProvidΓͺncia
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Article
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2002
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Elsevier Science
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English
β 196 KB
We have developed a consistent theory of the Heisenberg quantum antiferromagnet in the disordered phase with a short range antiferromagnetic order on the basis of the path integral for spin coherent states. In the framework of our approach we have obtained the response function for the spin fluctuat