Software for the frontiers of quantum chemistry: An overview of developments in the Q-Chem 5 package
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.
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- Aspuru-Guzik, Alán
- Casanova, David
- Cramer, Christopher J
- DePrince, A Eugene
- Dreuw, Andreas
- Goddard III, William Andrew
- Gunina, Anastasia O
- Hammes-Schiffer, Sharon
- Head-Gordon, Martin
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- Herbert, John M
- Krylov, Anna I
- Lao, Ka Un
- Liang, Wanzhen Zhen
- Mao, Yuezhi
- Mewes, Jan-Michael -M
- Mewes, Stefanie A
- Morgante, Pierpaolo
- Nanda, Kaushik D
- Neaton, Jeffrey B
- Plasser, Felix P
- Rehn, Dirk Robert
- Scheurer, Maximilian
- Slipchenko, Lyudmila V
- Stein, Christopher J
- Subotnik, Joseph E
- Truhlar, D G
- Van Voorhis, Troy Van
- Wesolowski, Tomasz A