Abstract
We propose and implement an alternative approach to the original Car–Parrinello method where the density matrix elements (instead of the molecular orbitals) are propagated together with the nuclear degrees of freedom. Our new approach has the advantage of leading to an O(N) computational scheme in the large system limit. Our implementation is based on atom-centered Gaussian orbitals, which are especially suited to deal effectively with general molecular systems. The methodology is illustrated by applications to the three-body dissociation of triazine and to the dynamics of a cluster of a chloride ion with 25 water molecules.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:17 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 5, 2024, 3:25 p.m.) |
Indexed | 40 minutes ago (Aug. 29, 2025, 3:46 p.m.) |
Issued | 24 years, 2 months ago (June 8, 2001) |
Published | 24 years, 2 months ago (June 8, 2001) |
Published Print | 24 years, 2 months ago (June 8, 2001) |
@article{Schlegel_2001, title={Ab initio molecular dynamics: Propagating the density matrix with Gaussian orbitals}, volume={114}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1372182}, DOI={10.1063/1.1372182}, number={22}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Schlegel, H. Bernhard and Millam, John M. and Iyengar, Srinivasan S. and Voth, Gregory A. and Daniels, Andrew D. and Scuseria, Gustavo E. and Frisch, Michael J.}, year={2001}, month=jun, pages={9758–9763} }