Spin correlation function of theS=1antiferromagnetic Heisenberg chain by the large-cluster-decomposition Monte Carlo method
- 1 August 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 40 (4), 2421-2425
- https://doi.org/10.1103/physrevb.40.2421
Abstract
We calculate correlation functions of a one-dimensional spin S=1 antiferromagnetic Heisenberg model by the large-cluster-decomposition Monte Carlo method. We find that the correlation functions are well approximated by modified Bessel functions. This result supports Haldane’s conjecture, and the correlation length agrees with that obtained from spin-wave theory using elementary excitation data.Keywords
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