Journal Title

Physical Review Letters

Publication Date

7-13-1992

Abstract

Extensive spin‐dynamics simulations have been performed to study the dynamical behavior of the classical Heisenberg chain at infinite temperatures and long wavelengths. We find that the energy and spin show distinctly different dynamics in the isotropic system. The energy correlation function follows the classical diffusion theory prediction, namely, it decays exponentially with q 2 t. In contrast, the spin correlation function is found to decay exponentially as q 2.12 t ln t implying a logarithmically divergent diffusion constant and the failure of the usual hydrodynamic assumptions.

Subjects

Hydrodynamics; Rotational motion

Publication Information

Copyright 1992 American Physical Society. The original published version of this article may be found at http://dx.doi.org/10.1063/1.353682.

DOI

10.1063/1.353682

Peer-Reviewed

Yes

Document Type

Journal Article

Included in

Physics Commons

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