Stable motions of high energy particles interacting via a repelling potential

活動時間:2024-09-08 09:20

活動地點:學院2号樓2022報告廳

主講人:Dmitry Turaev

主講人中文簡介:

Dmitry Turaev教授現任倫敦帝國理工學院數學系教授,長期從事動力系統,分岔理論,混沌動力學問題等相關領域的研究工作,是現代非線性動力學研究的傑出代表之一。他于1991年在下諾夫哥羅德大學獲得博士學位,2004-2006年2次獲得以色列科學基金,2014-2018獲得俄羅斯科學基金,并主持和參與英國皇家學會多項項目。

Dmitry Turaev教授在耗散混沌的量化,Hamiltonian動力學,無限維動力學,動力系統和遍曆理論,微分方程動力學等方面取得了很好的研究成果。目前著有專著1部(俄文撰寫,先後被翻譯為英文,中文),并在Invent. Math.、Phys. Rev. Lett.、Ann. Appl. Probab.、Proc. Natl. Acad. Sci.USA、Math. Ann.、Comm. Math. Phys.、Adv. Math.、Arch. Ration. Mech. Anal.等國際期刊上發表學術論文百餘篇。

活動内容摘要:

The motion of N particles interacting by a smooth repelling potential and confined to a compact d-dimensional region is proved to be, under mild conditions, non-ergodic for all sufficiently large energies. Specifically, choreographic solutions, for which all particles follow approximately the same path close to an elliptic periodic orbit of the single-particle system, are proved to be KAM stable in the high energy limit. It is also  proved that the motion of N repelling particles in a rectangular box is non-ergodic at high energies for a generic choice of interacting potential.

主持人:孫春友


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