Phase Structures of U(2) Gauge Theory with $\theta$-Term in 2 dimensions

Masahiro Imachi, Takaaki Kakitsuka, Norimasa Tsuzuki +1

U(2) lattice gauge theory with $\theta$-term in 2 space-time dimensions is investigated. It has non-Abelian real action and Abelian( U(1) type) imaginary action. The imaginary action is…