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发布时间:2019-10-17文章来源:华南理工大学数学学院浏览次数:292

报告题目:Orbital Stability of Standing Waves for the BNLS with mixed dispersions

报  告  人:朱世辉  教授(四川师范大学)

报告时间:20191021日(周一)上午10:00-11:00

报告地点:4号楼318

邀  请  人:李用声  教授

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数学学院

20191017

报告摘要:

In this paper, we study the standing wave solutions for the bi-harmonic nonlinear Schrodinger equation with a Laplacian term (BNLS), modelling the propagation of intense laser beams in a bulk medium with Kerr nonlinearity. We first study the stability of standing waves for (BNLS) with the negative coefficient of second-order dispersion term, and find a lower bound of the coefficient ensuring the existence of orbitally stable standing waves. This shows that the sign of the second-order dispersion has crucial effect on the existence of orbitally stable standing waves for the BNLS with mixed dispersions.

 

报告人简介:

朱世辉,四川师范大学数学科学学院教授,四川省学术和技术带头人后备人选。已主持国家自然科学基金项目2项,教育部博士点基金项目(新教师),四川省杰出青年基金。主要从事非线性Schrodinger方程爆破解动力学性质研究,已在《J. Differential Equations》、《J. Mathematical Physics》、《J. Dynamics and Differential Equations》、《Dynamics of PDE》、《Nonlinear Differential Equations and Applications》、《中国科学》等国内外专业学术刊物上发表论文20余篇, 并多次被国内外专家引用,包括国际著名学者 G. Fibich的专著(《The Nonlinear Schrodinger Equation: Singular Solutions and Optical Collapse》,Springer, 2015)等, 2篇论文入选ESI高被引。