April 5, 2021

We are pleased to announce a research and development (R&D) breakthrough by Sumitomo Heavy Industries, Ltd. (President: Shinji Shimomura) was published in "Scientific Reports" of Springer Nature* on March 16, 2021.
(*) Springer Nature is the world's largest academic book publisher and its many journals, such as "Nature," have a significant impact on the world.

This R&D breakthrough is related to the renormalized molecular dynamics (RMD) method to solve “high computational cost”, an issue associated with the molecular dynamics (MD) method.
Although the MD method has been utilized in various fields, it is difficult to calculate on a large-scale due to computational cost.
The renormalization group was started by Dr. Shinichiro Tomonaga, the winner of the Nobel Prize in Physics in 1965, and has been developed by many eminent physicists, such as Dr. K. G. Wilson, the winner of the Nobel Prize in Physics in 1982.
It is a powerful tool that has helped make substantial progress in theoretical physics, resulting in considerable success in addressing unsolved issues. The RMD method has also drastically improved computational efficiency, an issue for MD methods.

In the article published in Scientific Reports, the RMD method was applied to three different issues (specifically, (1) computation of collision of elastic spheres at a macroscopic scale, (2) computation of phase transition with latent heat, and (3) mesoscale computation near the critical point), and all the results were proved by computational accuracy.
The results also suggested that the dissipative particle dynamics (DPD) method can be derived from the powerful tool of the renormalization group.
The article is available by clicking on the URL below under "Access to the article published."


[ About this article ]
Title: Renormalization group theory of molecular dynamics
Authors: Daiji Ichishima & Yuya Matsumura (Affiliation: Technology Research Center, Corporate Technology Management Group, Sumitomo Heavy Industries, Ltd.)
Access to the article published: Scientific Reports
https://www.nature.com/articles/s41598-021-85286-3