Speaker: Professor Phan Thanh Nam, LMU Munich (Germany)

German time: 9:00--11：00 AM，October 27th (Monday), 2025;

Beijing Time: 16：00--18：00 PM, October 27th (Monday), 2025;

Zoom Meeting ID: 880 9508 3682, Passcode: 202510

Talk 1: The Ionization Problem in Quantum Mechanics

Abstract: The ionization conjecture states that a neutral atom can bind at most one or two extra electrons. Although this is well established experimentally, deriving it rigorously from many-body quantum mechanics remains a major challenge. I will review some results on this topic and related problems.

Talk 2: Quantitative Estimates for the Excess Charge from the Schr?dinger Equation

Abstract: We will review several rigorous estimates for the excess charge in atoms, starting from the many-body Schr?dinger equation. This includes Lieb’s fundamental result $2Z + 1$ and recent refinements.

报告人简介：Phan Thanh Nam现为德国慕尼黑大学教授。主要从事偏微分方程分析、数学物理、变分理论等领域的理论研究，特别是在多体量子力学等领域做出过具有国际影响力的系列研究成果，在Invent. Math.、CPAM、JEMS等国际顶尖数学期刊上发表论文60余篇，现为Mathematische Zeitschrift等国际数学杂志编委。