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arXiv · 2501.07159

Equation-of-motion Coupled-cluster singles, doubles and(full) triples for doubly ionized and two-electron-attached states: A Computational implementation

Manisha·Prashant Uday Manohar·Anna I Krylov
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Abstract

We present our computational implementation of the equation-of-motion (EOM) coupled-cluster (CC) singles, doubles, and triples (SDT) method for computing doubly ionized (DIP) and two-electron attached (DEA) states within Q-CHEM. These variants have been implemented within both the (conventional) double precision (DP) and the single precision (SP) algorithms and will be available in the upcoming major release of {\sl Q-CHEM}. We present here the programmable expressions and some pilot application of $CH_2$ for DIP and DEA EOM-CCSDT.

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Manisha, Prashant Uday Manohar, Anna I Krylov. 2025-01-13. Equation-of-motion Coupled-cluster singles, doubles and(full) triples for doubly ionized and two-electron-attached states: A Computational implementation. https://arxiv.org/abs/2501.07159

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