1304.0245 (Yousef Yousefi et al.)

Semi classical modeling of isotropic Non-Heisenberg magnets for spin S=1
and linear quadrupole excitation dynamics    [PDF]

Yousef Yousefi, Khikmat Kh. muminov

In this paper, equations describing one-dimensional Non-Heisenberg model are studied by use of generalized coherent states in real parameterization and then dissipative spin wave equation for dipole and quadrupole branches is obtained if there is a small linear excitation from the ground state. Finally, it is shown that for such exchange-isotropy Hamiltonians, optical branch of spin wave is non-dissipative.

View original: http://arxiv.org/abs/1304.0245