Largecharge

The O(N) vector model at large charge: EFT, large N and resurgence

I will discuss the IR fixed point of the O(N) vector model in 3 dimensions (Wilson-Fisher point) in the framework of the large charge expansion. First I will construct an EFT valid for any N, then verify the prediction of the model in the double …

Large R-charge EFT correlators in N=2 SQCD

We consider large-R-charge Coulomb branch correlation functions in N=2 superconformal QCD in D=4 dimensions, with gauge group SU(2) and $N_f = 4$ hypermultiplets in the fundamental representation. Using information from supersymmetric recursion …

Resurgence of the large-charge expansion

We study the O(2N) model at criticality in three dimensions in the double scaling limit of large N and large charge. We show that the large-charge expansion is an asymptotic series, and we use resurgence techniques to study the non-perturbative …

The O(N) vector model at large charge: EFT, large N and resurgence

I will discuss the IR fixed point of the O(N) vector model in 3 dimensions (Wilson-Fisher point) in the framework of the large charge expansion. First I will construct an EFT valid for any N, then verify the prediction of the model in the double …

The O(N) vector model at large charge: EFT, large N and resurgence

I will discuss the IR fixed point of the O(N) vector model in 3 dimensions (Wilson-Fisher point) in the framework of the large charge expansion. First I will construct an EFT valid for any N, then verify the prediction of the model in the double …

Introduction to the large charge expansion

Working in sectors of large global charge leads to important simplifications when studying strongly coupled CFTs. In this talk I will introduce the large-charge expansion via the simple example of the O(2) model and apply it in a number of other …

Near-Schrödinger dynamics at large charge

In this note we discuss a non-relativistic system at large charge in a regime where Schrödinger symmetry is slightly broken by an explicit mass term for the dilaton field which non-linearly realizes non-relativistic scale invariance. To get there, we …

Introduction to the large charge expansion

Working in sectors of large global charge leads to important simplifications when studying strongly coupled CFTs. In this talk I will introduce the large-charge expansion via the simple example of the O(2) model and apply it in a number of other …

Selected Topics in the Large Quantum Number Expansion

In this review we study quantum field theories and conformal field theories with global symmetries in the limit of large charge for some of the generators of the symmetry group. At low energy the sectors of the theory with large charge are described …