论文标题
旋转复杂标量场之间的电荷传递
Charge transfer between rotating complex scalar fields
论文作者
论文摘要
我们考虑将U（1）电荷密度转移在复杂标量场的Bose-Einstein冷凝物之间，耦合到热浴，重点是均匀的Affleck-Dine场的情况，将存储在其角度运动中的电荷传输到轴轴场。我们证明，在没有其他对称性的情况下，这种电荷转移在宇宙扩张以及Affleck-Dine场的热有效潜力的帮助下可能非常有效。如果与热浴的相互作用破坏原始u（1）x u（1）对称性，则可能会在标量场之间进行电荷重新分布。然后，通过最小化自由能来确定两个场之间的电荷分布。我们讨论对涉及复杂标量的宇宙学设置的含义，并应用了轴突暗物质，男性生成，kination统治和重力波的产生。
We consider the transfer of a U(1) charge density between Bose-Einstein condensates of complex scalar fields coupled to a thermal bath, focusing on the case of a homogeneous Affleck-Dine field transmitting the charge stored in its angular motion to an axion field. We demonstrate that in the absence of additional symmetries this charge transfer, aided by cosmic expansion as well as the thermal effective potential of the Affleck-Dine field, can be very efficient. The charge redistribution between the scalar fields becomes possible if the interactions with the thermal bath break the original U(1) x U(1) symmetry down to a single U(1) symmetry; the charge distribution between the two fields is then determined by minimizing the free energy. We discuss implications for cosmological setups involving complex scalars, with applications to axion dark matter, baryogenesis, kination domination, and gravitational wave production.
