标题： 通过原初黑洞的随机漫步重子生成 显示英文标题

标题： Random-walk baryogenesis via primordial black holes

摘要： 引力破坏重子数 $B$：一颗恒星有大量的它，而由恒星形成的黑洞则没有。 考虑早期宇宙中强子湮灭之前的原初黑洞，遇到并吸收重子和反重子：每次这样的吸收都会使宇宙的 $B$改变一个单位，向上或向下。 但吸收事件是 $uncorrelated$$and$ $random$ ，因此它们在 $B$-空间中表现为随机游走，导致最终出现净 $|B|$的期望值。 虽然这种效应的规模最不确定，但它必须存在。 我们探讨了一些影响，包括净$|B|$随膨胀的变化、与宇宙拓扑的联系以及可能的观测特征。 显示英文摘要

摘要： Gravitation violates baryon number $B$: A star has a huge amount of it, while a black hole forming from the star has none. Consider primordial black holes before the hadronic annihiliation in the early universe, encountering and absorbing baryons and antibaryons: Each such absorption changes $B$ of the universe by one unit, up or down. But the absorption events are $uncorrelated$ $and$ $random$, hence they amount to a random walk in $B$-space, leading to the expectation of a net $|B|$ at the end. While the scale of this effect is most uncertain, it must exist. We explore some ramifications, including the change of net $|B|$ with expansion, connection with universe topology, and possible observational signatures.