Reminder Virtual SP Seminar on Tuesday 21 April at 11am

[De Comelli Marina]

JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR

Tuesday, April 21, 11:00 am

Room: https://zoom.us/j/799099444

The link is to enter to the virtual room and will be available few 
minutes before the starting time but you should install Zoom before.

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*Title: Resurgence and Non-Perturbative Physics: Applications in 
Condensed Matte*r
Marcos Mariño (Geneve University, Switzerland)
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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 
condensed matter systems. In particular, I will argue that the 
superconducting gap can be understood in terms of the Borel 
singularities of the perturbative series in the normal state, and is 
similar to the renormalon singularity of quantum chromodynamics.

See you there!

-- 
Dr. Raúl Arias
SISSA - Scuola Internazionale Superiore di Studi Avanzati
via Bonomea 265, I–34136 Trieste, Italy
Phone: +39 040 3787 278