Diffusion Coefficient for a Linear Heisenberg Chain at High Temperature.

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Ferrieu, F.
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Journal de Physique (Paris), Lettres | 1977年 / 38卷 / 19期
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For a linear Heisenberg chain, the knowledge of the 16th order moment for spin one-half , allows a better description of the time-dependent spin pair correlation function at infinite temperature. The diffusion coefficient D is calculated and compared to the value obtained by a simulation technique (S equals infinity ).
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