We derive and implement an alternative formulation of the Stochastic Lanczos algorithm to be employed in connection with the Many-Body Dispersion model (MBD). Indeed, this formulation, which is only possible due to the Stochastic Lanczos’ reliance on matrix-vector products, introduces generalized dipoles and fields. These key quantities allow for a state-of-the-art treatment of periodic boundary conditions via the Smooth Particle Mesh Ewald (SPME) approach which uses efficient fast Fourier transforms. This SPME-Lanczos algorithm drastically outperforms the standard replica method which is affected by a slow and conditionally convergence rate that limits an efficient and reliable inclusion of long-range periodic boundary conditions interactions in many-body dispersion modelling. The proposed algorithm inherits the embarrassingly parallelism of the original Stochastic Lanczos scheme, thus opening up for a fully converged and efficient periodic boundary conditions treatment of MBD approaches.
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21 October 2023
Research Article|
October 20 2023
Smooth particle mesh Ewald-integrated stochastic Lanczos many-body dispersion algorithm
Pier Paolo Poier
;
Pier Paolo Poier
a)
(Conceptualization, Methodology, Software, Writing – original draft, Writing – review & editing)
1
Laboratoire de Chimie Théorique, Sorbonne Université
, 75005 Paris, France
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Louis Lagardère
;
Louis Lagardère
(Conceptualization, Methodology, Software, Supervision, Writing – original draft, Writing – review & editing)
1
Laboratoire de Chimie Théorique, Sorbonne Université
, 75005 Paris, France
2
Sorbonne Université, IP2CT, FR 2622 CNRS
, Paris, France
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Jean-Philip Piquemal
Jean-Philip Piquemal
b)
(Conceptualization, Funding acquisition, Methodology, Project administration, Resources, Supervision, Writing – original draft, Writing – review & editing)
1
Laboratoire de Chimie Théorique, Sorbonne Université
, 75005 Paris, France
3
Department of Biomedical Engineering, The University of Texas at Austin
, Austin, Texas 78712, USA
b)Author to whom correspondence should be addressed: [email protected]
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b)Author to whom correspondence should be addressed: [email protected]
a)
Electronic mail: [email protected]
J. Chem. Phys. 159, 154109 (2023)
Article history
Received:
July 05 2023
Accepted:
October 02 2023
Citation
Pier Paolo Poier, Louis Lagardère, Jean-Philip Piquemal; Smooth particle mesh Ewald-integrated stochastic Lanczos many-body dispersion algorithm. J. Chem. Phys. 21 October 2023; 159 (15): 154109. https://doi.org/10.1063/5.0166476
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