论文标题
电动源重新召集和取消电源源。
Resummation and cancellation of the VIA source in electroweak baryogenesis
论文作者
论文摘要
我们重新介绍了电动性男性生成中的VEV插入近似（通过）源。与原始派生相反，我们仅依赖于1颗粒的自我能量图。我们在所有VEV插入中都扰动绿色的功能方程式。 VIA源对应于Kadanoff-Baym（KB）方程的梯度扩展中的领先顺序贡献。我们发现，在扰动和重新召集的方法中，它既消失了，又消失了。有趣的是，来源的不存在是KB方程中不同项之间取消的结果，而不是VEV插入近似本身中的病理学。
We re-derive the vev-insertion approximation (VIA) source in electroweak baryogenesis. In contrast to the original derivation, we rely solely on 1-particle-irreducible self-energy diagrams. We solve the Green's function equations both perturbatively and resummed over all vev-insertions. The VIA source corresponds to the leading order contribution in the gradient expansion of the Kadanoff-Baym (KB) equations. We find that it vanishes both for bosons and fermions, both in the perturbative and in the resummed approach. Interestingly, the non-existence of the source is a result of a cancellation between different terms in the KB equations, and not of a pathology in the vev-insertion approximation itself.
