Baryon asymmetric Universe from spontaneous CP violation
Abstract Spontaneous CP violation, such as the Nelson-Barr (NB) Face Sheilds mechanism, is an attractive scenario for addressing the strong CP problem while realizing the observed phase of the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix.However, not only the CKM phase but also the baryon asymmetric Universe requires sources of CP violation.