Remote Nordic HET seminar: Marcos Mariño

Speaker: Marcos Mariño

Title: Resurgence and non-perturbative physics: from quantum mechanics to superconductors

Abstract: It is often said that perturbation theory is insufficient to understand many physical problems, and that non-perturbative effects are needed. It turns out that making this statement precise requires the mathematical framework of resurgence theory, in which perturbative series are extended to so-called trans-series, and non-perturbative effects can be detected by looking at perturbation theory at large orders. In this talk I will first review the basics of the theory of resurgence, and then present some of its recent applications to problems ranging from the exact WKB method to superconductivity. 

Zoom link: https://stockholmuniversity.zoom.us/j/67620824857