Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2005-02-14
Physics
Condensed Matter
Other Condensed Matter
6 pages, 2 figures
Scientific paper
In this letter we present a general classification of integrable models of identical classical spins coupled via the isotropic Heisenberg Hamiltonian. Our constructive proof of integrability provides a solution scheme for the equations describing the time evolution of each spin. We show that for a broad class of Heisenberg couplings, it is possible to solve the equations of motion iteratively by building a hierarchy of spins, each of which precesses about the composite spin of the previous level. This leads to the identification of the frequencies of precession at each level.
Ameduri Marco
Gerganov Bogomil
Klemm Richard A.
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