Software for the frontiers of quantum chemistry: An overview of developments in the Q-Chem 5 package

Epifanovsky, Evgeny; Gilbert, Andrew T. B.; Feng, Xintian; Lee, Joonho; Mao, Yuezhi; Mardirossian, Narbe; Pokhilko, Pavel; White, Alec F.; Coons, Marc P.; Dempwolff, Adrian L.; Gan, Zhengting; Hait, Diptarka; Horn, Paul R.; Jacobson, Leif D.; Kaliman, Ilya; Kussmann, Jörg; Lange, Adrian W.; Lao, Ka Un; Levine, Daniel S.; Liu, Jie; McKenzie, Simon C.; Morrison, Adrian F.; Nanda, Kaushik D.; Plasser, Felix; Rehn, Dirk R.; Vidal, Marta L.; You, Zhi-Qiang; Zhu, Ying; Alam, Bushra; Albrecht, Benjamin J.; Aldossary, Abdulrahman; Alguire, Ethan; Andersen, Josefine H.; Athavale, Vishikh; Barton, Dennis; Begam, Khadiza; Behn, Andrew; Bellonzi, Nicole; Bernard, Yves A.; Berquist, Eric J.; Burton, Hugh G. A.; Carreras, Abel; Carter-Fenk, Kevin; Chakraborty, Romit; Chien, Alan D.; Closser, Kristina D.; Cofer-Shabica, Vale; Dasgupta, Saswata; de Wergifosse, Marc; Deng, Jia; Diedenhofen, Michael; Do, Hainam; Ehlert, Sebastian; Fang, Po-Tung; Fatehi, Shervin; Feng, Qingguo; Friedhoff, Triet; Gayvert,...

Abstract

This article summarizes technical advances contained in the fifth major release of the Q-Chem quantum chemistry program package, covering developments since 2015. A comprehensive library of exchange-correlation functionals, along with a suite of correlated many-body methods, continues to be a hallmark of the Q-Chem software. The many-body methods include novel variants of both coupled-cluster and configuration-interaction approaches along with methods based on the algebraic diagrammatic construction and variational reduced density-matrix methods. Methods highlighted in Q-Chem 5 include a suite of tools for modeling core-level spectroscopy, methods for describing metastable resonances, methods for computing vibronic spectra, the nuclear-electronic orbital method, and several different energy decomposition analysis techniques. High-performance capabilities including multithreaded parallelism and support for calculations on graphics processing units are described. Q-Chem boasts a community of well over 100 active academic developers, and the continuing evolution of the software is supported by an "open teamware"model and an increasingly modular design.

Citation

Epifanovsky, E., Gilbert, A. T. B., Feng, X., Lee, J., Mao, Y., Mardirossian, N., …Krylov, A. I. (2021). Software for the frontiers of quantum chemistry: An overview of developments in the Q-Chem 5 package. Journal of Chemical Physics, 155(8), Article 084801. https://doi.org/10.1063/5.0055522

• Journal Article Type: Article
• Acceptance Date: Jun 18, 2021
• Online Publication Date: Aug 23, 2021
• Publication Date: Aug 28, 2021
• Deposit Date: Oct 7, 2021
• Publicly Available Date: Oct 7, 2021
• Journal: Journal of Chemical Physics
• Print ISSN: 0021-9606
• Electronic ISSN: 1089-7690
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 155
• Issue: 8
• Article Number: 084801
• DOI: https://doi.org/10.1063/5.0055522
• Keywords: Physical and Theoretical Chemistry; General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/6395203
• Publisher URL: https://aip.scitation.org/doi/10.1063/5.0055522