[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, February 5, 2018
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L102

Mithat Unsal
North Carolina State University

*Aspects of Resurgence and Picard-Lefchetz Theory in QFT

* Recent works show that there may indeed exist a non-perturbative 
continuum definition of quantum field theory (QFT),
at least in some interesting regimes. I will describe some new ideas 
from mathematics and physics, in particular, the
resurgence theory, the trans-series framework from mathematics and the 
idea of adiabatic continuity from physics to
provide new insights into the structure of general QFTs.  The new 
techniques allow us to determine new saddle points
which play important dynamical roles, e.g.  in confinement, 
theta-dependence in semi-classically calculable domains.
It also provides new insights into the nature of IR-renormalon problem. 
In a wide class of quantum mechanical systems,
these techniques show that all non-perturbative data is secretly encoded 
in perturbation theory.


The link to remotely connect via bluejeans is available at 
https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html 

The (partial) schedule for the next seminars is available at the same page.
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