NCON：一个用于MATLAB的张量网络收缩器
计算物理
2015-08-26 v3 强关联电子
量子物理
摘要
任何数值张量网络算法实现中的一个基本过程是收缩张量网络。在此过程中，由多个通过求和指标连接起来的张量构成的网络，通过计算指标求和被简化为单个张量或一个数。本文介绍了一个MATLAB函数ncon()，即“网络收缩器”，它接受一个张量网络和一个描述如何将该网络简化为单个张量或数的收缩序列作为输入，并输出该单个张量或数。函数ncon()可通过下载本预印本的源代码获得。
引用
@article{arxiv.1402.0939,
title = {NCON: A tensor network contractor for MATLAB},
author = {Robert N. C. Pfeifer and Glen Evenbly and Sukhwinder Singh and Guifre Vidal},
journal= {arXiv preprint arXiv:1402.0939},
year = {2015}
}
备注
7 pages, 3 figures, RevTeX 4.1. Contains downloadable software v1.01. Amended download instructions to note that when clicking to download the source in .tar.gz format, arXiv actually supplies it in uncompressed .tar format. Substantial text overlap with arXiv:1310.8023: We use many of the same examples to describe the operation of ncon() as we do for the complementary package multienv()