Work performed within the research program of the Sonderforschungsbereich 341, Köln-Aachen-Jülich.
Variational study of isotropic spin-1 chains using matrix-product states†
Article first published online: 14 MAR 2006
Copyright © 1995 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Annalen der Physik
Volume 507, Issue 2, pages 157–163, 1995
How to Cite
Schadschneider, A. and Zittartz, J. (1995), Variational study of isotropic spin-1 chains using matrix-product states. Ann. Phys., 507: 157–163. doi: 10.1002/andp.19955070207
- Issue published online: 14 MAR 2006
- Article first published online: 14 MAR 2006
- Manuscript Accepted: 24 OCT 1994
- Manuscript Received: 27 SEP 1994
- Quantum spin chains;
- Matrix-product ground states;
- Variational treatment
We study the phase diagram of the bilinear-biquadratic spin-1 chain. Using so-called matrix-product (MP) states we obtain upper bounds for the groundstate energy. The advantage of these MP states is their simplicity. Moreover they give an accurate description of the physics, especially in the Haldane phase.