标题： 强超电磁场标准模型中的电弱重子生成机制 显示英文标题

标题： Electroweak baryogenesis in the standard model with strong hypermagnetic fields

摘要： 我们证明，在大尺度的原初超磁化场存在的情况下，有可能产生大量的CP破坏，从而在电弱相变期间利用标准模型来解释重子数与熵的比例。 导致CP破坏不对称性的机制是对称相中费米子与背景场耦合的手征特性，这可以用来构造类似于波姆-阿哈诺夫效应的双费米子干涉过程。 我们估算出，对于强超磁化场BY = (0.3 - 0.5)T2，当泡壁缓慢膨胀时，重子数与熵的比例可达到ρB/s = (3 - 6)×10^-11。 显示英文摘要

摘要： We show that in the presence of large scale primordial hypermagnetic fields, it is possible to generate a large amount of CP violation to explain the baryon to entropy ratio during the electroweak phase transition within the standard model. The mechanism responsible for the existence of a CP violating asymmetry is the chiral nature of the fermion coupling to the background field in the symmetric phase which can be used to construct two-fermion interference processes in analogy to the Bohm-Aharanov effect. We estimate that for strong hypermagnetic fields B_Y=(0.3-0.5)T^2 the baryon to entropy ratio can be rho_B/s=(3 - 6)X10^-11 for slowly expanding bubble walls.