5月12日:乔志军
发布时间:2015-05-07 浏览量:6589

报告题目:A generalized Camassa-Holm equation and its peakon solutions

报告人:乔志军 教授(Department of Mathematics, University of Texas-Pan,American)

主持人:陈勇 教授

报告时间:2015年5月12日 周二 8:00—10:00

报告地点:中山北路理科大楼B1102

 

 

报告摘要:

       In this paper, we study an integrable system with both quadratic and cubic nonlinearity. This model is kind of a cubic generalization of the Camassa-Holm (CH) equation. The equation is shown integrable with its Lax pair, bi-Hamiltonian structure, and infinitely many conservation laws. In the case of b = 0, the peaked soliton (peakon) and multi-peakon solutions are presented. In particular, the two-peakon dynamical system is explicitly presented and their collisions are investigated in details. In some special case, the weak kink and kink-peakon interactional solutions are found. Significant difference from the CH equation is analyzed through a comparison. In the paper, we also study all possible smooth one-soliton solutions for the system.

报告人简介:

       乔志军于1997年获得复旦大学数学系博士学位,从师谷超豪院士和胡和生院士。1999年获得百篇优秀博士毕业论文。1996-2001任辽宁大学数学系教授。1999-2001,德国,卡塞尔综合大学,数学系,洪堡特研究员。2001-2004,洛斯阿拉莫斯国家实验室,研究员。现任教于美国德克萨斯大学泛美分校数学系,终身教授。现有8位海外专家合作者,已经指导5位博士后及超过20位研究生。研究方向是非线性偏微分方程,可积系统,孤立子理论,可积辛映射,离散格子系统,R-矩阵理论。现已出版著作2部,发表论文100余篇,其中包括著名国际杂志《数学物理学通讯》、《偏微分方程通讯》、《欧洲物理快报》、等。现作为项目负责人(PI)的两个项目:DoD(http://www.utpa.edu/dod)与NHARP(700,000.00美元),另外作为PI,已经完成超过10个国家项目。组织超过20个国际会议、研讨会。

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