Generalized Lanczos method for systematic optimization of tensor network states
Generalized Lanczos method for systematic optimization of tensor network states
复制标题
张量网络状态系统优化的广义 Lanczos 方法
DOI:
10.1088/1674-1056/27/7/070501
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发表时间:
2016-11
影响因子:
1.7
通讯作者:
Xiang Tao
中科院分区:
文献类型:
--
作者:
Huang Rui Zhen;Liao Hai Jun;Liu Zhi Yuan;Xie Hai Dong;Xie Zhi Yuan;Zhao Hui Hai;Chen Jing;Xiang Tao
We propose a generalized Lanczos method to generate the many-body basis states of quantum lattice models using tensor-network states (TNS). The ground-state wave function is represented as a linear superposition composed from a set of TNS generated by Lanczos iteration. This method improves significantly the accuracy of the tensor-network algorithm and provides an effective way to enlarge the maximal bond dimension of TNS. The ground state such obtained contains significantly more entanglement than each individual TNS, reproducing correctly the logarithmic size dependence of the entanglement entropy in a critical system. The method can be generalized to non-Hamiltonian systems and to the calculation of low-lying excited states, dynamical correlation functions, and other physical properties of strongly correlated systems.
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影响因子:
3.7
作者:
Xie, Z. Y.;Chen, J.;Qin, M. P.;Zhu, J. W.;Yang, L. P.;Xiang, T.
通讯作者:
Xiang, T.
影响因子:
3.7
作者:
Xiaoqun Wang;T. Xiang
通讯作者:
Xiaoqun Wang;T. Xiang
影响因子:
3.7
作者:
Holzner, Andreas;Weichselbaum, Andreas;von Delft, Jan
通讯作者:
von Delft, Jan
影响因子:
8.6
作者:
Jiang, H. C.;Weng, Z. Y.;Xiang, T.
通讯作者:
Xiang, T.
DOI:
10.1017/cbo9781139207249.009
发表时间:
2012
期刊:
--
影响因子:
--
作者:
W. Marsden
通讯作者:
W. Marsden