OptiBoost: A method for choosing a safe and efficient boost for the bond-boost method in accelerated molecular...

Area of Science:

• Computational Chemistry
• Materials Science
• Chemical Physics

Background:

• Molecular dynamics (MD) simulations are crucial for studying condensed-phase systems.
• Rare events in MD simulations require accelerated methods for efficiency.
• Hyperdynamics (HD) is an accelerated MD technique, but determining appropriate boost parameters is difficult.

Purpose of the Study:

• To develop a method for optimizing boost values in hyperdynamics simulations.
• To improve the applicability and ease of use of HD simulations.
• To enable efficient simulation of rare events in condensed-phase systems.

Main Methods:

• Developed the OptiBoost method to determine boost values for HD simulations.
• Utilized the bond-boost method as a basis for parameter optimization.
• Validated the method using a cosine potential and Ag diffusion on Ag(100) in vacuum and solvent.

Main Results:

• OptiBoost successfully predicted safe and effective boost values across tested systems.
• The method demonstrated reliability in both vacuum and solvent environments.
• Hyperdynamics simulations with OptiBoost showed improved efficiency for rare event dynamics.

Conclusions:

• The OptiBoost protocol is an effective solution for optimizing HD simulations.
• This method advances the practical application of hyperdynamics for rare event simulations.
• OptiBoost enhances the efficiency and accessibility of molecular dynamics simulations.