TeNeS (Tensor Network Solver) is a free/libre open-source software program package for calculating two-dimensional many-body quantum states based on the tensor network method and the corner transfer matrix renormalization group (CTMRG) method. This package calculates ground-state wavefunctions for user-defined Hamiltonians and evaluates user-defined physical quantities such as magnetization and correlation functions. For certain predefined models and lattices, there is a tool that makes it easy to generate input files. TeNeS uses an OpenMP/MPI hybrid parallelized tensor operation library and thus can perform large-scale calculations using massively parallel machines.
@article{arxiv.2112.13184,
title = {TeNeS: Tensor Network Solver for Quantum Lattice Systems},
author = {Yuichi Motoyama and Tsuyoshi Okubo and Kazuyoshi Yoshimi and Satoshi Morita and Takeo Kato and Naoki Kawashima},
journal= {arXiv preprint arXiv:2112.13184},
year = {2022}
}