Low-lying properties in a decorated Heisenberg spin chain

H. Asakawa

Physica A: Statistical Mechanics and its Applications, 1999, vol. 269, issue 2, 369-377

Abstract: 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.

Keywords: Quantum spin chain; Heisenberg model (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:269:y:1999:i:2:p:369-377

DOI: 10.1016/S0378-4371(99)00096-5

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