  We study the large-charge sector of large-N fermionic CFTs in three
dimensions. Depending on the model and the nature of the fixed charge, we find
two types of descriptions: in terms of a superfluid or a Fermi sphere. We
explicitly compute the conformal dimensions of the lowest operator of fixed
charge and in the superfluid case verify the EFT predictions for the phonon
spectrum.

High Energy Physics - Theory