| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-1601 - C8-1602 | |
| DOI | https://doi.org/10.1051/jphyscol:19888733 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1601-C8-1602
DOI: 10.1051/jphyscol:19888733
Department of Physics, The University of Rhode Island, Kingston, RI 02881-0817, U.S.A.
J. Phys. Colloques 49 (1988) C8-1601-C8-1602
DOI: 10.1051/jphyscol:19888733
REGULAR AND CHAOTIC TIME EVOLUTION IN SPIN CLUSTERS
N. Srivastava, Ch. Kaufman et G. MüllerDepartment of Physics, The University of Rhode Island, Kingston, RI 02881-0817, U.S.A.
Abstract
We calculate spin-autocorrelation functions (as time averages over chaotic trajectories) and their intensity spectra for clusters of two classical spins, interacting via a nonintegrable Hamiltonian. The long-time behaviour observed includes both power-law decay and persistent oscillatory components, resulting in an intensity spectrum with power-law singularities and discrete lines.