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Resonating Valence Bond Theory of Coupled Heisenberg Chains

S. R. White·R. M. Noack·D. J. Scalapino
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Abstract

Using numerical results from a density matrix renormalization group study as a guide, we develop a resonating valence bond (RVB) theory for coupled Heisenberg chains. We argue that simple topological effects mandate a short-range RVB description of systems with an even number of chains $n_c$, with a spin gap, short-range correlations, and confinement of topological spin defects. Odd-$n_c$ systems have long-range RVB ground states, no gap, and power-law correlations.

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S. R. White, R. M. Noack, D. J. Scalapino. 1994-03-17. Resonating Valence Bond Theory of Coupled Heisenberg Chains. https://doi.org/10.1103/physrevlett.73.886

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