A robust and efficient line search for self-consistent field iterations

Herbst, Michael F.; Levitt, Antoine

doi:10.48550/arxiv.2109.14018

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…DFTK.jl has already been used to investigate new developments in the self-consistent field procedure. 63,64 The success of DFTK.jl has shown that Julia is not only viable, but effective at tackling chemical problems and producing high-performance software.…”

Section: The Julia Programming Languagementioning

confidence: 99%

NQCDynamics.jl: A Julia package for nonadiabatic quantum classical molecular dynamics in the condensed phase

Gardner

Douglas-Gallardo

Stark

et al. 2022

The Journal of Chemical Physics

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Accurate and efficient methods to simulate nonadiabatic and quantum nuclear effects in high-dimensional and dissipative systems are crucial for the prediction of chemical dynamics in condensed phase. To facilitate effective development, code sharing and uptake of newly developed dynamics methods, it is important that software implementations can be easily accessed and built upon.Using the Julia programming language, we have developed the \pkgname ~ package which provides a framework for established and emerging methods for performing semiclassical and mixed quantum-classical dynamics in condensed phase. The code provides several interfaces to existing atomistic simulation frameworks, electronic structure codes, and machine learning representations. In addition to the existing methods, the package provides infrastructure for developing and deploying new dynamics methods which we hope will benefit reproducibility and code sharing in the field of condensed phase quantum dynamics. Herein, we present our code design choices and the specific Julia programming features from which they benefit.We further demonstrate the capabilities of the package on two examples of chemical dynamics in condensed phase: the population dynamics of the spin-boson model as described by a wide variety of semi-classical and mixed quantum-classical nonadiabatic methods and the reactive scattering of H2 on Ag(111) using the Molecular Dynamics with Electronic Friction method. Together, they exemplify the broad scope of the package to study effective model Hamiltonians and realistic atomistic systems.

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Section: The Julia Programming Languagementioning

confidence: 99%

NQCDynamics.jl: A Julia package for nonadiabatic quantum classical molecular dynamics in the condensed phase

Gardner

Douglas-Gallardo

Stark

et al. 2022

The Journal of Chemical Physics

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NQCDynamics.jl: A Julia Package for Nonadiabatic Quantum Classical Molecular Dynamics in the Condensed Phase

Gardner,

Douglas-Gallardo,

Stark

et al. 2022

Preprint

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Accurate and efficient methods to simulate nonadiabatic and quantum nuclear effects in high-dimensional and dissipative systems are crucial for the prediction of chemical dynamics in condensed phase. To facilitate effective development, code sharing and uptake of newly developed dynamics methods, it is important that software implementations can be easily accessed and built upon. Using the Julia programming language, we have developed the NQCDynamics.jl package which provides a framework for established and emerging methods for performing semiclassical and mixed quantum-classical dynamics in condensed phase. The code provides several interfaces to existing atomistic simulation frameworks, electronic structure codes, and machine learning representations. In addition to the existing methods, the package provides infrastructure for developing and deploying new dynamics methods which we hope will benefit reproducibility and code sharing in the field of condensed phase quantum dynamics. Herein, we present our code design choices and the specific Julia programming features from which they benefit. We further demonstrate the capabilities of the package on two examples of chemical dynamics in condensed phase: the population dynamics of the spin-boson model as described by a wide variety of semi-classical and mixed quantum-classical nonadiabatic methods and the reactive scattering of H 2 on Ag(111) using the Molecular Dynamics with Electronic Friction method. Together, they exemplify the broad scope of the package to study effective model Hamiltonians and realistic atomistic systems. Methods FSSH NRPMD Ehrenfest MDEF Classical Langevin eCMM Simulation Parameters Atoms Elements Masses Models Analytic model ASE calculator ML model Keywords Simulation cell Temperature Method extras Simulation Method (atoms , model; kwargs¡ ) { } FIG. 1. The user inputs required to define the parameters for a simulation. This diagram along with Figs. 2 and 3 was created using the Excalidraw 65 online tool.

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A robust and efficient line search for self-consistent field iterations

Cited by 2 publications

References 28 publications

NQCDynamics.jl: A Julia package for nonadiabatic quantum classical molecular dynamics in the condensed phase

NQCDynamics.jl: A Julia package for nonadiabatic quantum classical molecular dynamics in the condensed phase

NQCDynamics.jl: A Julia Package for Nonadiabatic Quantum Classical Molecular Dynamics in the Condensed Phase

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