5 papers
First application of the transcorrelated method to noncovalent interactions: The A24 dataset
Johannes Hauskrecht, Stephanie Lambie, Evelin Martine Corvid Christlmaier +3
We present the first application of transcorrelated (TC) coupled-cluster (CC) theory to noncovalent interactions within the xTC approximation. The method is assessed for the A24 da…
Compression of virtual spaces in transcorrelated methods via singular value decomposition: application to the G2 set
Yifan Cheng, Kristoffer Simula, Johannes Hauskrecht +3
We introduce a new singular-value-decomposition-based scheme for constructing small virtual spaces out of large basis sets for transcorrelated (TC) calculations, termed SVD-TC. Thi…
An Additive Reference Correction Scheme for the Transcorrelated Method
Johannes Hauskrecht, Kristoffer Simula, Yifan Cheng +3
We introduce an additive reference correction for the transcorrelated (TC) method and its three-body mean-field approximation (xTC), to improve energy differences computed in small…
A Transcorrelated Wave-Function Framework for Solids: An Application to Bulk and Defected Silicon
Kristoffer Simula, Johannes Hauskrecht, Evelin Martine Corvid Christlmaier +4
Accurate wave-function descriptions of pristine and defected solids remain challenging due to the simultaneous presence of finite-size, basis-set, and correlation errors. While emb…
Modular Construction of Jastrow Factors for the Transcorrelated Method
J. Philip Haupt, Maria-Andreea Filip, Evelin Martine Corvid Christlmaier +3
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…