Long-distance properties of frozen U(1) Higgs and axially U(1)-gauged four-Fermi models in $1+1$ dimensions

Hisashi Yamamoto

We study the long-distance relevance of vortices (instantons) in an $N$-component axially U(1)-gauged four-Fermi theory in $1+1$ dimensions, in which a naive use of $1/N$ expansion…