Deconfinement and CP-breaking at $\theta =\pi$ in Yang-Mills theories and a novel phase for SU(2)

Shi Chen, Kenji Fukushima, Hiromichi Nishimura +1

We discuss the deconfinement and the CP-breaking phase transitions at $\theta =\pi$ in Yang-Mills theories. The 't Hooft anomaly matching prohibits the confined phase with CP symmetry and…