The antiferromagnetic spin- 1/2 -XXZ model on rings with an odd number of sites
- 21 August 1995
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 28 (16) , 4469-4479
- https://doi.org/10.1088/0305-4470/28/16/007
Abstract
The ground-state energies of the antiferromagnetic XXZ model at a given spin are determined on chains with an odd number N of sites. Analytical and numerical solutions of the Bethe ansatz equations are compared for the N-even and N-odd case. The scaling properties of the ground-state energies enable the determination of the zero-temperature susceptibility. For the isotropic case, we analyse the logarithmic terms in the low-field limit.Keywords
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