Jul 18 – 23, 2022
University of Vienna
Europe/Vienna timezone

Large-charge expansions and Resurgence.

Not scheduled
4m
Audimax (University of Vienna)

Audimax

University of Vienna

Universitätsring 1, 1010 Vienna, Austria
Gong Show Talk Gong Show

Speaker

Nicola Andrea Dondi (University of Bern)

Description

The conformal data of generic CFTs involving heavy charged operators can be organised as a series in inverse powers of the global charges involved. When extrapolating these expansions to light low-charge sectors, is it relevant to ask whether these series are divergent and Borel-summable. In this talk, I will show that the O(N) scalar CFT has a large-charge expansion which is not Borel-summable with non-perturbative ambiguities cured by Worldline instantons. These are discussed using Resurgence methods and shown to have an exact semi-classical expansion.

Primary author

Nicola Andrea Dondi (University of Bern)

Co-authors

Domenico Orlando Susanne Reffert (Universitaet Bern (CH)) Mr Ioannis Kalogerakis (University of Bern)

Presentation materials

There are no materials yet.