Abstract
A ground-state phase transition of the antiferromagnetic Heisenberg ladder model is investigated by means of the exact-diagonalization method. A hidden-order correlation is defined for characterizing the ground state. The critical point and the exponent v are estimated accurately with the use of the hidden-order correlation. The relevance of the resonating-valence-bond theory to the present system is also discussed by inspecting hidden orders and the elementary excitation.
| Original language | English |
|---|---|
| Pages (from-to) | 1967-1979 |
| Number of pages | 13 |
| Journal | journal of the physical society of japan |
| Volume | 64 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1995 |
| Externally published | Yes |
Keywords
- Haldane phase
- dimer phase
- hidden correlation
- ladder model
- resonating valence bond
ASJC Scopus subject areas
- Physics and Astronomy(all)