sheen
麻烦可以贴下原公式内容出来,这边帮测试下
$$
\begin{aligned}
\mathcal{H}=&-J \Sigma_{<i, j\rangle} \vec{S}_{i} \cdot \vec{S}_{j}-\Sigma_{<i, j\rangle} \vec{\beta}_{i j} \cdot\left(\vec{S}_{i} \times \vec{S}_{j}\right) \\
&-D \Sigma_{i, j \neq i} \frac{3\left(\vec{S}_{i} \cdot \vec{r}_{i j}\right)\left(\vec{S}_{j} \cdot \vec{r}_{i j}\right)-\vec{S}_{i} \cdot \vec{S}_{j}\left|\vec{r}_{i j}\right|^{2}}{\left|\vec{r}_{i j}\right|^{5}}-K \Sigma_{i} S_{i, z}^{2}
\end{aligned}
$$