The dimer-RVB State of the Four-Leg Heisenberg Ladder: Interference among Resonances
M. Roncaglia, G. Sierra, M.A. Martin-Delgado
TL;DR
This paper investigates the ground state of a four-leg spin ladder using a dimer-RVB approach and Lanczos calculations, revealing new interference effects among resonances beyond known mechanisms.
Contribution
It introduces the discovery of interference effects among resonances in the dimer-RVB state of the four-leg Heisenberg ladder, expanding understanding of its quantum ground state.
Findings
Identification of interference effects among resonances
Application of dimer-RVB ansatz and Lanczos method
Enhanced understanding of the ground state structure
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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