Description
The large-charge expansion offers a nonperturbative framework to study conformal field theories with global symmetries. After introducing the framework, I will discuss the large charge sector of the NJL model in 2<d<4 dimensions. In particular, I will present various results for the spectrum of the lowest-lying operators with fixed U(1) axial charge Q. For d=3 and large N, I will show that the 1/Q expansion is asymptotic and determine the exponential corrections using resurgence theory.
Speaker
Jahmall Matteo Bersini
(Kavli institute for physics and mathematics of the universe)
