标题： 电弱相变中的自发磁生 显示英文标题

标题： Spontaneous Magnetogenesis at the Electroweak Phase Transition

摘要： 电弱相变期间的自发CP破坏可以引起标准模型哑铃磁场均扭转变形，从而产生可观测到的星系际磁场以及少量的重子不对称性。 我们通过将标准模型的电弱规范群与具有非零速度的类轴子粒子耦合来证明这一点。 研究由此产生的单极子、弦和哑铃构型后，我们得出结论，电弱相变期间生成的磁场的旋手性分数大致由无量纲的轴子速度决定。 显示英文摘要

摘要： Spontaneous CP violation during the electroweak phase transition can induce a twisting of the magnetic field configuration of Standard Model dumbbells, resulting in sizable intergalactic magnetic fields and a small baryon asymmetry, in agreement with observations. We demonstrate this by coupling the electroweak gauge group of the Standard Model to an axion-like particle with a non-vanishing velocity. Studying the resulting monopole, string and dumbbell configurations, we conclude that the helicity fraction of the magnetic fields generated at the electroweak phase transition is roughly given by the dimensionless axion velocity.