Derives closed-form matrix elements for explicitly correlated Gaussian basis in periodic systems and validates on infinite 1D hydrogen chain.
In every case Okl =P M IM, and the Gaussian decay of ωM (or its analogue after augmentation) ensures conver- gence
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Explicitly Correlated Gaussian Basis Approach to Periodic Systems
Derives closed-form matrix elements for explicitly correlated Gaussian basis in periodic systems and validates on infinite 1D hydrogen chain.