Evidence of a CP broken deconfined phase in 4D SU(2) Yang-Mills theory at $\theta =\pi$ from imaginary $\theta$ simulations

Mitsuaki Hirasawa, Masazumi Honda, Akira Matsumoto +2

The spontaneous breaking of CP symmetry in 4D SU($N$) pure Yang-Mills theory at $\theta =\pi$ has recently attracted much attention in the context of the higher-form symmetry and the 't Ho…