Precise Estimation of the S = 2 Haldane Gap by Numerical Diagonalization
Open Access
- 15 October 2018
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 87 (10)
- https://doi.org/10.7566/jpsj.87.105002
Abstract
The Haldane gap of the S = 2 Heisenberg antiferromagnet in a one-dimensional linear chain is examined by a numerical-diagonalization method. A precise estimate for the magnitude of the gap is successfully obtained by a multistep convergence-acceleration procedure applied to finite-size diagonalization data under the twisted boundary condition.All Related Versions
Funding Information
- Japan Society for the Promotion of Science (16K05418, 16K05419, 16H01080(JPhysics), 18H04330)
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