Entanglement Entropy Bounds in the Higher Spin XXZ Chain

Christoph Fischbacher, Oluwadara Ogunkoya

We consider the Heisenberg XXZ spin-$J$ chain ($J\in \mathbb{N}/2$) with anisotropy parameter $\Delta$. Assuming that $\Delta >2J$, and introducing threshold energies $E_{K}:=K\left(1-\frac{2J…