From Molecular Dynamics to Dissipative Particle Dynamics

TL;DR

This paper presents a method to derive dissipative particle dynamics models directly from molecular dynamics simulations, linking microscopic interactions to coarse-grained mesoscale descriptions.

Contribution

It introduces a systematic procedure to obtain dissipative particle dynamics rules from molecular interactions, including deriving a Langevin equation and Gibbs distribution.

Findings

Derived Langevin equations for dissipative particles

Established connection between molecular interactions and mesoscale models

Provided a framework for coarse-graining molecular dynamics

Abstract

A procedure is introduced for deriving a coarse-grained dissipative particle dynamics from molecular dynamics. The rules of the dissipative particle dynamics are derived from the underlying molecular interactions, and a Langevin equation is obtained that describes the forces experienced by the dissipative particles and specifies the associated canonical Gibbs distribution for the system.