Published July 1, 2000
| Version v1
Journal article
Solution of a two-leg spin ladder system
Creators
- 1. Instituto de Fisica da UFRGS, Av. Bento Goncalves 9500, Porto Alegre, RS (Brazil)
- 2. Centre for Mathematical Physics, Department of Mathematics, University of Queensland, Brisbane, Queensland 4072 (Australia)
Description
A model for a spin-1/2 ladder system with two legs is introduced. It is demonstrated that this model is solvable via the Bethe ansatz method for arbitrary values of the rung coupling J. This is achieved by a suitable mapping from the Hubbard model with appropriate twisted boundary conditions. We determine that a phase transition between gapped and gapless spin excitations occurs at the critical value Jc=1/2 of the rung coupling
Additional details
Identifiers
- DOI
- 10.1103/PhysRevB.62.65;
- arXiv
- arXiv:cond-mat/9911096v1;
- PII
- S0163-1829(00)07425-7;
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 62
- Journal Issue
- 1
- Journal Page Range
- p. 65-68
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35071623
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- BOUNDARY CONDITIONS; COUPLING; EXCITATION; HUBBARD MODEL; MATHEMATICAL SOLUTIONS; PHASE TRANSFORMATIONS; SPIN
- Descriptors DEC
- ANGULAR MOMENTUM; CRYSTAL MODELS; ENERGY-LEVEL TRANSITIONS; MATHEMATICAL MODELS; PARTICLE PROPERTIES
Optional Information
- Notes
- (c) 2000 The American Physical Society