$3d$ fermion-boson map with imaginary chemical potential

E. G. Filothodoros, A. C. Petkou, N. D. Vlachos

We study the three-dimensional $U(N)$ Gross-Neveu and CP${}^{N-1}$ models in the canonical formalism with fixed $U(1)$ charge. For large-$N$ this is closely related to coupling the m…