Abstract:
We use the mode-coupling approximation to derive a closed system of equations
for the Green's functions for the transverse and longitudinal spin components
taking the sum rules related to the finiteness of the spin into account
exactly.
Keywords:
mode-coupling approximation, sum rules for spin operators.
Citation:
Yu. A. Tserkovnikov, “Equations for two-temperature Green's functions for a Heisenberg
ferromagnet in the mode-coupling approximation”, TMF, 154:1 (2008), 197–206; Theoret. and Math. Phys., 154:1 (2008), 165–174