Density matrix renormalization group and periodic boundary conditions: A quantum information perspective
Density matrix renormalization group and periodic boundary conditions: A quantum information perspective
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DOI：
10.1103/physrevlett.93.227205
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发表时间：
2004-11-26
影响因子：
8.6
通讯作者：
Cirac, JI
中科院分区：
文献类型：
--
作者：
Verstraete, F;Porras, D;Cirac, JI
从量子信息的角度介绍了一种分析密度矩阵重整化群(DMRG)数值方法的图解。这导致了DMRG的变分公式，它允许在具有周期性边界条件的问题的情况下进行显著改进。图中还解释了该方法在纠缠和隐形传态方面的一些特点。
We introduce a picture to analyze the density matrix renormalization group (DMRG) numerical method from a quantum information perspective. This leads to a variational formulation of DMRG which allows for dramatic improvements in the case of problems with periodic boundary conditions. The picture also explains some features of the method in terms of entanglement and teleportation.