Divide-and-conquer linear-scaling quantum chemical computations

H Nakai, M Kobayashi, T Yoshikawa… - The Journal of …, 2023 - ACS Publications
Fragmentation and embedding schemes are of great importance when applying quantum-
chemical calculations to more complex and attractive targets. The divide-and-conquer (DC) …

Three pillars for achieving quantum mechanical molecular dynamics simulations of huge systems: Divide‐and‐conquer, density‐functional tight‐binding, and …

H Nishizawa, Y Nishimura, M Kobayashi… - Journal of …, 2016 - Wiley Online Library
The linear‐scaling divide‐and‐conquer (DC) quantum chemical methodology is applied to
the density‐functional tight‐binding (DFTB) theory to develop a massively parallel program …

Nonadiabatic molecular dynamics with extended density functional tight-binding: Application to nanocrystals and periodic solids

M Shakiba, E Stippell, W Li… - Journal of Chemical …, 2022 - ACS Publications
In this work, we report a new methodology for nonadiabatic molecular dynamics calculations
within the extended tight-binding (xTB) framework. We demonstrate the applicability of the …

Development of linear-scaling relativistic quantum chemistry covering the periodic table

H Nakai - Bulletin of the Chemical Society of Japan, 2021 - academic.oup.com
Abstract This Award Account focuses on the author's studies on the theoretical
developments of two-component (2c) relativistic quantum chemistry calculations for large …

Protein response effects on cofactor excitation energies from first principles: Augmenting subsystem time-dependent density-functional theory with many-body …

L Scholz, J Neugebauer - Journal of Chemical Theory and …, 2021 - ACS Publications
We investigate the possibility of describing protein response effects on a chromophore
excitation by means of subsystem time-dependent density-functional theory (sTDDFT) in …

GPU‐Accelerated Large‐Scale Excited‐State Simulation Based on Divide‐and‐Conquer Time‐Dependent Density‐Functional Tight‐Binding

T Yoshikawa, N Komoto, Y Nishimura… - Journal of …, 2019 - Wiley Online Library
The present study implemented the divide‐and‐conquer time‐dependent density‐functional
tight‐binding (DC‐TDDFTB) code on a graphical processing unit (GPU). The DC method …

Novel approach to excited-state calculations of large molecules based on divide-and-conquer method: application to photoactive yellow protein

T Yoshikawa, M Kobayashi, A Fujii… - The Journal of Physical …, 2013 - ACS Publications
In this study, the divide-and-conquer (DC) method is extended to configuration-interaction
singles, time-dependent density functional, and symmetry-adapted cluster configuration …

RAQET: Large‐scale two‐component relativistic quantum chemistry program package

M Hayami, J Seino, Y Nakajima… - Journal of …, 2018 - Wiley Online Library
The Relativistic And Quantum Electronic Theory (RAQET) program is a new software
package, which is designed for large‐scale two‐component relativistic quantum chemical …

Excitation configuration analysis for divide-and-conquer excited-state calculation method using dynamical polarizability

R Nishimura, T Yoshikawa, K Sakata… - The Journal of Chemical …, 2024 - pubs.aip.org
The authors previously developed a divide-and-conquer (DC)-based non-local excited-state
calculation method for large systems using dynamical polarizability [Nakai and Yoshikawa …

An effective energy gradient expression for divide-and-conquer second-order Møller–Plesset perturbation theory

M Kobayashi, H Nakai - The Journal of Chemical Physics, 2013 - pubs.aip.org
An effective energy gradient expression for divide-and-conquer second-order Møller–Plesset
perturbation theorya) | The Journal of Chemical Physics | AIP Publishing Skip to Main Content …