- 96-252 Parreira J. R., Bolina O., Perez J. F.
- Energy Gap in Heisenberg Antiferromagnetic Half-Integer Spin Chains
with Long-Range Interactions
(10K, TeX)
Jun 6, 96
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Abstract. We show that there is no gap in the excitation spectrum of
antiferromagnetic chains with half-integer spins and long-range
interactions provided the exchange function has a sufficiently
rapid decay
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