Influence of phonon fluctuations on soliton dynamics in the easy-axis Heisenberg model
作者： Zoran Ivić , M Satarić , S Stamenković , R Žakula
DOI: 10.1088/0031-8949/43/5/018
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摘要: The relaxation of solitions on lattice vibrations in the easy axis Heisenberg model was investigated. It shown that soliton dynamics is governed by nonlinear Schrodinger equation with damping and fluctuation force. presence these terms consequence emission absorption real phonons when velocity greater then speed sound crystal. As result perturbations there arises time dependence parameters. Soliton amplitude decreases followed simultaneous increase width while its propagation has diffusion character since behaves like classical Brownian particle.
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