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blume-capel model 1magnetization 1pseudo-transitions 1spin chains 1transfer-matrix method 1

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cond-mat.stat-mech2026

Still life in a classic Blume-Capel model: pseudo-transitions in a spin-1 diamond chain

Elham Shahhosseini Shahrabadi, Majid Moradi, Jozef Strecka

The authors exactly solve a spin‑1 Blume‑Capel model on a diamond chain in a magnetic field, showing that tiny energy gaps between a nondegenerate ground state and many low‑lying e…