论文标题
隐藏的扇形单极暗物质与物质统治
Hidden Sector Monopole Dark Matter with Matter Domination
论文作者
论文摘要
遗物暗物质的热冷冻机制比$ o（10-100 $ tev $）$重，需要违反扰动单位性的横截面。然而，从粒子物理学的角度来看，暗物质的存在比这些量表更重，这表明需要对这种理论进行非热宇宙学历史。拓扑暗物质是这种动机的情况。在这里，可以通过kibble-zurek机制以丰富的形式产生隐藏的暗物质，从而描述了在二阶相变中产生的缺陷的非平衡动力学。我们重新审视原始的拓扑暗物质方案，重点关注隐藏扇形磁性单极，并考虑更一般的宇宙学历史。我们发现，如果单孔要完全重现当前的暗物质的当前丰度，那么这里考虑的热历史的单极质量（$ 1-10^5 $）对于这里考虑的热历史是通用的。特别是，在涉及物质统治的早期时代的情况下，单子数密度始终小于或等于纯辐射主导的等值，只要满足关键指数的一定条件，这会导致更大的单子质量需要说明此类宇宙学中的固定遗物丰度。
The thermal freeze-out mechanism for relic dark matter heavier than $O(10-100 $ TeV$)$ requires cross-sections that violate perturbative unitarity. Yet the existence of dark matter heavier than these scales is certainly plausible from a particle physics perspective, pointing to the need for a non-thermal cosmological history for such theories. Topological dark matter is a well-motivated scenario of this kind. Here the hidden-sector dark matter can be produced in abundance through the Kibble-Zurek mechanism describing the non-equilibrium dynamics of defects produced in a second order phase transition. We revisit the original topological dark matter scenario, focusing on hidden-sector magnetic monopoles, and consider more general cosmological histories. We find that a monopole mass of order ($1-10^5$) PeV is generic for the thermal histories considered here, if monopoles are to entirely reproduce the current abundance of dark matter. In particular, in a scenario involving an early era of matter domination, the monopole number density is always less than or equal to that in a pure radiation dominated equivalent provided a certain condition on critical exponents is satisfied. This results in a larger monopole mass needed to account for a fixed relic abundance in such cosmologies.
