2015 Fiscal Year Final Research Report
Self-organization of motion in systems of long-range interaction
| Project/Area Number |
25400403
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Kyushu 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 | 自己組織化 / 長距離相互作用 / 同期 / フラクタル / カオス / 自己回帰モデル |
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| Outline of Final Research Achievements |
We studied several coupled active systems with long-range interaction. Dynamical order is self-organized in these systems. We investigated some mechanicsms of self-organization of collective motion.
As an example of such system, we have proposed a new kind of block-spring model with viscoelasticity for earthquake. Nmerical simulation of the model reproduced a statistical law called Omori's law that the frequency of aftershocks decays in a power law. As another example, we have proposed a competitive aggregation model of slime mold. The slime molds send out chemical waves of cAMP which can propagate far away without damping. Slimed molds move in the direction of sources of waves. As a result of collective motion, a single large cluster of slime molds appears. Such an aggregation cluster is observed exprimentally.
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| Free Research Field |
非線形物理
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