Optimized Tensor-Network Renormalization for Quantum Dynamics: Resolving the Spectral Function of ${\mathrm{K}}_2\mathrm{Co}(\mathrm{Se}{\mathrm{O}}_3{)}_2$

Jiahang Hu, Runze Chi, B. Normand +2

Tensor-network methods have opened a powerful route for the study of dynamical spectral functions in two-dimensional quantum systems. However, existing approaches within the framew…