In recent years, research using artificial intelligence to predict material properties has advanced rapidly. Neural network quantum Monte Carlo methods have attracted attention as highly accurate simulation techniques. However, their extremely high computational cost has limited their application to small molecular systems. This study introduces a new computational method that overcomes this limitation.

Methods that simulate electron-level mechanisms on supercomputers are widely used to explore novel materials and understand biological phenomena. There is strong demand for new approaches that can deliver faster predictions while maintaining high accuracy.

In a recent breakthrough, researchers at Japan Advanced Institute of Science and Technology (JAIST), in collaboration with ByteDance Seed, China, etc., combined neural network techniques with a newly developed 'Bayesian localization of pseudo Hamiltonian' approach, achieving both accurate predictions and reduced computational cost. The research team included Associate Professor Tom Ichibha and Doctoral Student Ryunosuke Fujimaru (one of the co-first authors) from JAIST, together with researchers from ByteDance Seed. Their findings were published online in Nature Computational Science on July 10, 2026.

"By integrating AI techniques into research fields that have traditionally been advanced through physics and chemistry, significant progress has been achieved. This method is expected to contribute to the discovery of novel materials and the understanding of biological phenomena, and the present results will greatly advance research in these areas," said Prof. Ichibha.

This work has yielded significant results for the advancement of next-generation simulation technologies that integrate AI techniques with quantum chemical calculations. The developed method opens up possibilities for the high-precision analysis of large-scale materials and complex chemical reaction systems-- tasks that were previously difficult due to computational resource constraints. Future efforts to expand the scope to a wider range of elements are expected to facilitate applications across diverse fields, such as the discovery of novel materials, the design of high-performance catalysts, and the elucidation of biomolecular functions. Furthermore, applications in solid-state physics and excited-state calculations are anticipated, promising to contribute to resolving unsolved problems in the fields of quantum science and materials science.

Image title: A figure illustrating the accuracy achieved by the newly developed method
Image caption: The prediction error from simulations (vertical axis) is shown as a function of interatomic distance in materials (horizontal axis), in comparison with various existing methods.
 Zero error represents the ideal case, and the acceptable range of error is indicated by shading. The results labeled "PH" correspond to the method developed in this study.
They demonstrate that, while enabling fast simulations,the prediction errors remain within the acceptable range.
Credit: AssociateProfessor Tomohiro Ichiba from Japan Advanced Institute of Science and Technology (JAIST), Japan
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License: Original content
Usage restrictions: May be used with appropriate credit.

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July 22, 2026