The use of truncated configuration interaction in real-time time-dependent simulations of electron dynamics provides a balance of computational cost and accuracy, while avoiding some of the failures associated with real-time time-dependent density functional theory. However, low-order truncated configuration interaction also has limitations, such as overestimation of polarizability in configuration interaction singles, even when perturbative doubles are included. Increasing the size of the determinant expansion may not be computationally feasible, and so, in this work, we investigate the use of nonorthogonality in the determinant expansion to establish the extent to which higher-order substitutions can be recovered, providing an improved description of electron dynamics. Model systems are investigated to quantify the extent to which different methods accurately reproduce the (hyper)polarizability, including the high-harmonic generation spectrum of H2, water, and butadiene.
Skip Nav Destination
,
CHORUS
Article navigation
14 January 2024
Research Article|
January 08 2024
Time propagation of electronic wavefunctions using nonorthogonal determinant expansions Available to Purchase
Xinju Dong
;
Xinju Dong
(Data curation, Investigation, Methodology, Visualization, Writing – original draft)
Department of Chemistry, University of Louisville
, Louisville, Kentucky 40205, USA
Search for other works by this author on:
Lee M. Thompson
Lee M. Thompson
a)
(Conceptualization, Funding acquisition, Methodology, Project administration, Writing – review & editing)
Department of Chemistry, University of Louisville
, Louisville, Kentucky 40205, USA
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Xinju Dong
Lee M. Thompson
a)
Department of Chemistry, University of Louisville
, Louisville, Kentucky 40205, USA
a)Author to whom correspondence should be addressed: [email protected]
J. Chem. Phys. 160, 024106 (2024)
Article history
Received:
October 03 2023
Accepted:
December 15 2023
Citation
Xinju Dong, Lee M. Thompson; Time propagation of electronic wavefunctions using nonorthogonal determinant expansions. J. Chem. Phys. 14 January 2024; 160 (2): 024106. https://doi.org/10.1063/5.0179601
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
The Amsterdam Modeling Suite
Evert Jan Baerends, Nestor F. Aguirre, et al.
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.
Light–matter interaction at the nano- and molecular scale
Kaifeng Wu, Chufeng Zhang, et al.
Related Content
Quantum Mechanics of the H2–H2 Interaction. III. Nonorthogonal SCF—GF Calculations in the One‐Configuration Approximation
J. Chem. Phys. (December 1967)
Nonorthogonal configuration interaction study of the ground state of BeH2
J. Chem. Phys. (May 1973)
Nuclear-electronic orbital nonorthogonal configuration interaction approach
J. Chem. Phys. (October 2005)