Pachucki Krzysztof, Komasa Jacek
Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland.
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
J Chem Theory Comput. 2024 Oct 8;20(19):8644-8651. doi: 10.1021/acs.jctc.4c00861. Epub 2024 Sep 26.
We present a method for calculating the relativistic correction in hydrogen molecules that significantly exceeds the accuracy of all the previous literature results. This method utilizes the explicitly correlated nonadiabatic exponential wave function, and thus treats electrons and nuclei equivalently. The proposed method can be applied to any rovibrational state, including highly excited ones. The numerical precision of the relativistic correction reaches several kHz (∼10 cm), which is below the best experimental accuracy.
我们提出了一种计算氢分子相对论修正的方法,该方法的精度显著超过了此前所有文献结果的精度。此方法利用了显式相关的非绝热指数波函数,从而对电子和原子核进行等效处理。所提出的方法可应用于任何振转态,包括高激发态。相对论修正的数值精度达到了几千赫兹(约10厘米),低于最佳实验精度。