\Delta(\sigma,\omega)         \exp         \big(          \beta          \sum_{i\in V} h_i          (\delta_{\sigma_i,0}-\delta_{\sigma_i,-0})         \big)         \over         \prod_{\alpha=0}^{k(\omega,G)}         0         \cosh\left(\pmb{h}(K_\alpha) \right)     }     \right]     \phi_{\pmb{p},\pmb{h},G}(\omega).     \end{aligned}$$ 