Speaker: Professor Robert Seiringer, Institute of Science and Technology (Austria)

Beijing Time: 21:00-22:00, October 13rd (Monday), 2025;

Zoom Meeting ID: 835 0473 3879, Passcode:  202510

Abstract: We study the spectrum of the Fröhlich Hamiltonian for the polaron at fixed total momentum. We prove the existence of excited eigenvalues between the ground state energy and the essential spectrum at strong coupling. In fact, our main result shows that the number of excited energy bands diverges in the strong coupling limit. In contrast, at weak coupling no such excited states exist. (Based on joint work with Morris Brooks and David Mitrouskas)

报告人简介：Robert Seiringer现为奥地利科技研究院教授、奥地利科学院院士、欧洲科学院院士，曾担任国际数学物理联盟主席。主要从事量子多体系统分析方面的理论研究，在Ann. of Math.、Invent. Math.、JAMS、CPAM、Duke Math. J.、JEMS等国际顶尖数学期刊上发表论文近150篇，现为Comm. Math. Phys.主编。