2015 Fiscal Year Final Research Report
Numerical study of realization and analysis of the densest packing structures of multi-component hard-sphere systems
| Project/Area Number |
25800214
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Toho University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | ガラス / 剛体球 / 多分散 / モンテカルロ法 |
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| Outline of Final Research Achievements |
We studied multi-component hard-sphere systems to understand the material-composition dependence of the glass formation mechanism. We remark on the densest packing state, which is independent of the process of preparation but determined only by the material composition. The densest state is realized in a computer by full search of the macroscopic states. For this aim, we developed the method by unifying the Wang-Landau sampling and the replica exchange method. It is found that the search is accelerated by employing macroscopic state variables in addition to the particle density. In high density region, we find the Wang-Landau sampling does not converge. We avoided it by the extrapolation and analyze the reason in detail.
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| Free Research Field |
統計物理学
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