Low-lying properties in a decorated Heisenberg spin chain
A decorated quantum spin chain is introduced, which realizes the strong coupling limit of a generalized Kondo lattice model at half-filling. The low-lying properties of the decorated spin system are discussed. In the continuum and semiclassical limit of the present model, the nonlinear 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: |
1999
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Authors: | Asakawa, H. |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 269.1999, 2, p. 369-377
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Publisher: |
Elsevier |
Subject: | Quantum spin chain | Heisenberg model |
Saved in:
Online Resource
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