Speaker
Susanne Reffert
Description
The large-charge expansion has in the last few years proven to be a powerful tool for analytically accessing strongly-coupled CFTs. When working in a sector of fixed and large global charge, it is often possible to write an EFT for this sector as an expansion controlled by inverse powers of the large charge. I will introduce the large-charge expansion using the O(2) model. Combining the large-charge limit with other simplifying limits allows going beyond the EFT description. At the end of the talk I will give an overview over various recent applications.
