The Faddeev equations for the Heisenberg ferromagnet

J.E. Van Himbergen

Physica A: Statistical Mechanics and its Applications, 1977, vol. 86, issue 1, 93-110

Abstract: The Faddeev equations for the three-magnon T-matrix of the Heisenberg ferromagnet with nearest neighbour interactions are derived for the cubic lattice in arbitrary dimensions. The extreme case of spin 12 is considered and the kinematical restriction, that only one spin deviation per site is possible, has been taken into account rigorously. Hence the T-matrix is unitary and suited for the study of bound state as well as scattering state properties. The analytic solution of the homogeneous Faddeev equations in one dimension is given.

Date: 1977
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:86:y:1977:i:1:p:93-110

DOI: 10.1016/0378-4371(77)90064-4

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