Tensor Renormalization Group Algorithms with a Projective Truncation Method

Yoshifumi Nakamura, Hideaki Oba, Shinji Takeda

We apply the projective truncation technique to the tensor renormalization group (TRG) algorithm in order to reduce the computational cost from $O({\chi }^6)$ to $O({\chi }^5)$, where $\chi$ is t…