This article is cited in 2 papers

Hydrodynamic spectrum of an antiferromagnet at low temperatures

V. G. Morozov, A. N. Mukhai


Abstract: An expression is obtained for the statistical operator $\rho_l$ describing the local-equilibrium state of a Heisenberg antiferromagnet during the hydrodynamic stage of evolution. This expression for $\rho_l$ is used to derive the hydrodynamic equations of an isotropic antiferromagnet and easy-axis and easy-plane models in the phase with noncollinear sublattices. For low temperatures, an explicit expression is found for the thermat corrections to the spectrum of long-wavelength excitations in a wide range of external magnetic field strengths.

Received: 17.06.1977

 English version: Theoretical and Mathematical Physics, 1978, 36:1, 624–634

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