Hidden topological order in integer quantum spin chains
- 1 January 1989
- journal article
- Published by IOP Publishing in Physica Scripta
- Vol. T27 (T27) , 156-159
- https://doi.org/10.1088/0031-8949/1989/t27/027
Abstract
Using an idea of Rommelse and den Nijs, we have investigated a direct analogy between the topological order in integer quantum antiferromagnets and the topological order in the fractional quantum Hall effect (FQHE). Numerical results are presented for the S = 1 generalized Heisenberg chain. The analogy between the Laughlin gap in the FQHE and the Haldane gap in integer spin chains is discussed.Keywords
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