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arXiv · 2512.07530

Modular Construction of Jastrow Factors for the Transcorrelated Method

J. Philip Haupt·Maria-Andreea Filip·Evelin Martine Corvid Christlmaier·Yifan Cheng·Johannes Hauskrecht·Ali Alavi
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Abstract

In this work, we explore the reuse of terms in the Jastrow factor between systems for use in the transcorrelated method, to reduce the number of optimisable parameters for a given system. In particular, we propose a workflow in which atom-specific parts of Jastrow factors, optimised in atoms, may be reused in the molecule, with only a few parameters in the electron-electron part of the Jastrow left to optimise, while maintaining performance. We find that the modified workflow not only reduces the number of terms needing to be optimised, but also improves the accuracy of xTC-CCSD(T) energies.

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J. Philip Haupt, Maria-Andreea Filip, Evelin Martine Corvid Christlmaier, Yifan Cheng, Johannes Hauskrecht, Ali Alavi. 2025-12-08. Modular Construction of Jastrow Factors for the Transcorrelated Method. https://arxiv.org/abs/2512.07530

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