Self-consistent many body theory for standard basis operator Green's function: An application to anisotropic ferromagnets
R. Micnas, Rishabh Kishore, I. C. Dacunhalima · Biblioteca Digital da Memória Científica do INPE (National Institute for Space Research) · 1980
A self-consistent many body theory developed by Fedro and Wilson and extended by Kishore is used to obtain exact Dyson type equation of the retarded Green's function for the standard basis operator. These Green's functions are used to obtain elementary excitations and thermodynamic properties of the Heisenberg ferromagnet with uniaxial anisotropy.