Abstract
The S=2 antiferromagnetic Heisenberg open chain is analyzed with the real-space numerical renormalization-group method improved by White. The low-lying spectrum and the one-point function are evaluated to show the degeneracy and the boundary effect on the ground state. Generalized string correlation functions were calculated for θ=π and θ=π/2. The θ=π/2 string correlation is found to indicate the long-range hidden order of the ground state. These results are quite consistent with the S=2 vbs argument.
Original language | English |
---|---|
Pages (from-to) | 414-422 |
Number of pages | 9 |
Journal | journal of the physical society of japan |
Volume | 64 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 1995 |
Externally published | Yes |
Keywords
- Haldane conjecture
- S=2 system
- antiferromagnetic Heisenberg chain
- density-matrix renormalization method
- quantum spin systems
- valence-bond solid
ASJC Scopus subject areas
- Physics and Astronomy(all)