Abstract:The weighted extremal Kähler metrics introduced by Lahdili provide a vast generalisation of Calabi's extremal Kähler metrics, encompassing many examples of canonical metrics in geometry. In this talk, I will give a quick introduction to these metrics, and discuss the proof that weighted extremal manifolds are relatively weighted K-polystable, in a suitable sense. The proof is along th...
Abstract:The so-called extraordinary optical transmission (EOT) through metallic nanoholes has triggered extensive research in modern plasmonics and their applications in bio-sensing, imaging, etc. In this talk, I will present quantitative mathematical theory to understand scattering resonances that induce the EOT phenomenon in a series of metallic structures with sub-wavelength holes