Excitation gap of an antiferromagnetic Heisenberg chain with multiple decorations
A one-dimensional spin-12 antiferromagnetic Heisenberg model with multiple decorations is introduced. The low-lying properties of the decorated quantum spin chain are discussed. In the continuum and semiclassical limit of the present model, the non-linear sigma model with a topological term is derived and the conjecture for the low-lying state is proposed. Validity of the conjecture seems to be supported by the perturbational expansions and by the density matrix renormalization group calculations.
Year of publication: |
2000
|
---|---|
Authors: | Asakawa, H |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 286.2000, 1, p. 181-188
|
Publisher: |
Elsevier |
Subject: | Quantum spin chain | Heisenberg model |
Saved in:
Online Resource
Saved in favorites
Similar items by subject
-
Low-lying properties in a decorated Heisenberg spin chain
Asakawa, H., (1999)
-
Boundary magnetizations of isotropic magnets in open chains
Asakawa, Hitoshi, (1997)
-
Transmission fingerprints in quasiperiodic magnetic structures
Bezerra, C.G., (2003)
- More ...