TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCodeb.53
TI  - The Cytnx library for tensor networks
PY  - 2025/03/13
UR  - https://scipost.org/SciPostPhysCodeb.53
JF  - SciPost Physics Codebases
JA  - SciPost Phys. Codebases
SP  - 53
A1  - Wu, Kai-Hsin
AU  - Lin, Chang-Teng
AU  - Hsu, Ke
AU  - Hung, Hao-Ti
AU  - Schneider, Manuel
AU  - Chung, Chia-Min
AU  - Kao, Ying-Jer
AU  - Chen, Pochung
AB  - We introduce a tensor network library designed for classical and quantum physics simulations called Cytnx (pronounced as sci-tens). This library provides an almost identical interface and syntax for both C++ and Python, allowing users to effortlessly switch between the two languages. Aiming at a quick learning process for new users of tensor network algorithms, the interfaces resemble the popular Python scientific libraries like NumPy, Scipy, and PyTorch. Not only multiple global Abelian symmetries can be easily defined and implemented, Cytnx also provides a new tool called Network that allows users to store large tensor networks and perform tensor network contractions in an optimal order automatically. With the integration of cuQuantum, tensor calculations can also be executed efficiently on GPUs. We present benchmark results for tensor operations on both devices, CPU and GPU. We also discuss features and higher-level interfaces to be added in the future.
ER  -

@Article{10.21468/SciPostPhysCodeb.53,
	title={{The Cytnx library for tensor networks}},
	author={Kai-Hsin Wu and Chang-Teng Lin and Ke Hsu and Hao-Ti Hung and Manuel Schneider and Chia-Min Chung and Ying-Jer Kao and Pochung Chen},
	journal={SciPost Phys. Codebases},
	pages={53},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCodeb.53},
	url={https://scipost.org/10.21468/SciPostPhysCodeb.53},
}

@Article{10.21468/SciPostPhysCodeb.53-r1.0,
	title={{Codebase release 1.0 for Cytnx}},
	author={Kai-Hsin Wu and Chang-Teng Lin and Ke Hsu and Hao-Ti Hung and Manuel Schneider and Chia-Min Chung and Ying-Jer Kao and Pochung Chen},
	journal={SciPost Phys. Codebases},
	pages={53-r1.0},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCodeb.53-r1.0},
	url={https://scipost.org/10.21468/SciPostPhysCodeb.53-r1.0},
}