学术海报

4月28日 秦振云副教授学术报告(数学与统计学院)

发布者:吴福燕发布时间:2026-04-28浏览次数:10

报告人:秦振云 副教授

报告题目:Pattern Formation and Dynamics of Rogue Waves in the Sasa-Satsuma Equation

报告时间:2026428日(周二)下午4:30 - 5:30

报告地点:腾讯会议:482-474-313

主办单位:数学与统计学院、数学研究院、科学技术研究院

报告人简介:

秦振云,复旦大学博士生导师,主持国家自然科学基金青年基金与面上项目3项,主持上海市浦江人才计划特殊急需人才(D类)。主持上海市自然科学基金,云南省自然科学技术二等奖。主持复旦大学“一流建设”原创科研个性化支持项目(引导项目),访问过香港大学,美国密歇根大学,挪威科技大学,巴黎萨克雷大学等。主持复旦大学本科教学改革项目,连续获得复旦大学教师教学创新大赛三等奖、二等奖,特等奖。复旦大学数学科学学院刘宁侯明华教学发展基金、太平-复旦奖教金等教学奖励。在高水平的国际SCI期刊上发表论文数近五十余篇。

报告摘要:

This talk presents our recent work on higher-order rogue waves of the Sasa-Satsuma equation. By reformulating the classical dressing operator into a Darboux-type operator, we develop a modified dressing transformation that allows repeated iterations at the same eigenvalue. Combining Bloch eigenfunction expansions with Schur polynomial techniques, we construct a complete hierarchy of Nth-order semi-rational solutions with 3N free parameters. These solutions reveal triangular and elliptic multi-rogue-wave patterns, as well as rich interactions between rogue waves and breathers. We further derive a simplified second-order rogue wave under a symmetry constraint and show, through spectral analysis, that SSE rogue waves possess asymmetric spectra caused by the odd-order derivative terms.