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The dimer-RVB State of the Four-Leg Heisenberg Ladder: Interference among Resonances

M. Roncaglia·G. Sierra·M. A. Martin-Delgado
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Abstract

We study the ground state of the 4-leg spin ladder using a dimer-RVB ansatz and the Lanczos method. Besides the well known resonance mechanism between valence bond configurations we find novel interference effects among nearby resonances.

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M. Roncaglia, G. Sierra, M. A. Martin-Delgado. 1999-04-20. The dimer-RVB State of the Four-Leg Heisenberg Ladder: Interference among Resonances. https://doi.org/10.1103/physrevb.60.12134

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