标题： 来自弦理论的更多轴子星 显示英文标题

标题： More Axion Stars from Strings

摘要： 我们证明，如果暗物质由后暴胀情景中的QCD轴子组成，那么超过百分之十的暗物质会在物质辐射相等时有效地坍缩成玻色星。 这一结果在很大程度上独立于轴子质量的当前不确定性。 这种具有小行星质量以及地球-月球距离大小的孤子群体，可能合理地存活至今，对现象学和实验搜索可能有有趣的含义。 显示英文摘要

摘要： We show that if dark matter consists of QCD axions in the post-inflationary scenario more than ten percent of it efficiently collapses into Bose stars at matter-radiation equality. Such a result is mostly independent of the present uncertainties on the axion mass. This large population of solitons, with asteroid masses and Earth-Moon distance sizes, might plausibly survive until today, with potentially interesting implications for phenomenology and experimental searches.