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...

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...