Spinon confinement and the Haldane gap in SU(n) spin chains

Abstract

We use extensive DMRG calculations to show that a classification of SU(n) spin chains with regard to the existence of spinon confinement and hence a Haldane gap obtained previously for valence bond solid models applies to SU(n) Heisenberg chains as well. In particular, we observe spinon confinement due to a next-nearest neighbor interaction in the SU(4) representation 10 spin chain.

4 pages, 3 figures

References in corpus (5)

• New Trends in Density Matrix Renormalization
• Valence bond solids for SU(n) spin chains: exact models, spinon confinement, and the Haldane gap
• DMRG studies of critical SU(N) spin chains
• Valence bond solid states with symplectic symmetry
• Spontaneous trimerization in a bilinear-biquadratic S=1 zig-zag chain

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