報(bào)告人:秦振云 副教授
報(bào)告題目:Pattern Formation and Dynamics of Rogue Waves in the Sasa-Satsuma Equation
報(bào)告時(shí)間:2026年4月28日(周二)下午4:30 - 5:30
報(bào)告地點(diǎn):騰訊會(huì)議:482-474-313
主辦單位:數(shù)學(xué)與統(tǒng)計(jì)學(xué)院、數(shù)學(xué)研究院、科學(xué)技術(shù)研究院
報(bào)告人簡(jiǎn)介:
秦振云,復(fù)旦大學(xué)博士生導(dǎo)師,主持國(guó)家自然科學(xué)基金青年基金與面上項(xiàng)目3項(xiàng),主持上海市浦江人才計(jì)劃特殊急需人才(D類)。主持上海市自然科學(xué)基金,云南省自然科學(xué)技術(shù)二等獎(jiǎng)。主持復(fù)旦大學(xué)“一流建設(shè)”原創(chuàng)科研個(gè)性化支持項(xiàng)目(引導(dǎo)項(xiàng)目),訪問(wèn)過(guò)香港大學(xué),美國(guó)密歇根大學(xué),挪威科技大學(xué),巴黎薩克雷大學(xué)等。主持復(fù)旦大學(xué)本科教學(xué)改革項(xiàng)目,連續(xù)獲得復(fù)旦大學(xué)教師教學(xué)創(chuàng)新大賽三等獎(jiǎng)、二等獎(jiǎng),特等獎(jiǎng)。復(fù)旦大學(xué)數(shù)學(xué)科學(xué)學(xué)院劉寧侯明華教學(xué)發(fā)展基金、太平-復(fù)旦獎(jiǎng)教金等教學(xué)獎(jiǎng)勵(lì)。在高水平的國(guó)際SCI期刊上發(fā)表論文數(shù)近五十余篇。
報(bào)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.