Explicit conditions are given under which dimer states are guaranteed ground states in generalized Majumdar-Ghosh spin chains and ladders with arbitrary-range and anisotropic interactions, validated by exact diagonalization.
Hikihara, Journal of the Physical Society of Japan95, 10.7566/jpsj.95.024707 (2026)
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Exact dimer ground states of long-range spin chains and ladders
Explicit conditions are given under which dimer states are guaranteed ground states in generalized Majumdar-Ghosh spin chains and ladders with arbitrary-range and anisotropic interactions, validated by exact diagonalization.