Second renormalization of tensor-network states.
We propose a second renormalization group method to handle the tensor-network states or models. This method dramatically reduces the truncation error of the tensor renormalization group. It allows physical quantities of classical tensor-network models or tensor-network ground states of quantum systems to be accurately and efficiently determined.
Xie
Z Y
ZY
Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190, China.
Jiang
H C
HC
Chen
Q N
QN
Weng
Z Y
ZY
Xiang
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T