Electroweak Interaction and Baryogenesis

电弱重子生成依赖于一级相变中产生的泡壁的轮廓。指出泡壁上的CP破坏（过渡CP破坏）可以变得足够大以解释宇宙的重子不对称性（BAU）。在最小超对称模型（MSSM）中，具有CP破坏的泡壁轮廓由两个Higgs二重态的有效势控制。我们指出，在相变温度Tc下，通过求解具有单圈有效势的Higgs场的运动方程，确实发生了相变CP破坏。这种CF破坏只存在于被泡壁隔开的对称相和破碎相之间的中间区域，并不与CP破坏的实验界限相矛盾。我们还证明了一个与实验结果相一致的微小的显式CP破坏1。本文给出的中子EDM边界，非微扰地解决了CF共轭气泡对之间的简并，从而在相变后留下足够的BAU，我们必须强调CF对称性基本上是好的，并且贡献BAU的过渡CP破坏被微小的显式CP破坏所增强。

Electroweak baryogenesis depends on the profile of the bubble wall created in the first-order phase transition. It was pointed out that CP violation on the bubble wall(transitional CP violation) could become large enough to explain the baryon asymmetry of the universe(BAU). The profile of the bubble wall with CP violation is controlled by the effective potential of the two Higgs doublets in the minimal supersymmetric model(MSSM). We pointed out that the transitional CP violation really occurs by solving the equations of motion for the Higgs fieldswith the one loop effective potential at the transition temperature Tc.This type of CF violation exists only in the intermediate region between symmetric and broken phases separated by the bubble wall and never contradicts the experimental bounds on CP violation.We also showed that a tiny explicit CP violation1 which is consistent with the present bound on the neutron EDM, does nonperturbatively resolve the degeneracy between the CF-conjugate pair of bubbles to leave a sufficient BAU after the phase transition.We must stress that CF symmetry is fundamentally good and the transitional CP violation to contribute BAU is enhanced by a tiny explicit CP violation.