TeNeS: Tensor Network Solver for Quantum Lattice Systems

TL;DR

TeNeS is an open-source tensor network software for efficiently computing ground states and physical properties of two-dimensional quantum lattice systems, leveraging parallel computing for large-scale simulations.

Contribution

It introduces a versatile, parallelized tensor network solver with tools for easy input generation for various quantum lattice models.

Findings

Supports large-scale quantum state calculations

Enables evaluation of physical quantities like magnetization and correlations

Provides user-friendly tools for predefined models

Abstract

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.