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Exact solution of the integrable XXZ Heisenberg model with arbitrary spin. I. The ground state and the excitation spectrum

✍ Scribed by Kirillov, A N; Reshetikhin, N Yu

Book ID
121089527
Publisher
Institute of Physics
Year
1987
Tongue
English
Weight
918 KB
Volume
20
Category
Article
ISSN
0305-4470

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We study the ground state and low-lying excitations of the S ΒΌ 1 2 XXZ antiferromagnet on the kagomeΒ΄lattice at magnetization one-third of the saturation. An exponential number of non-magnetic states is found below a magnetic gap. The non-magnetic excitations also have a gap above the ground state,