用超相对论气泡填充孤立暗区
Populating secluded dark sector with ultra-relativistic bubbles
AI总结：
本文研究孤立暗区在一阶相变中通过超相对论气泡与等离子体碰撞产生暗物质，比较弱、强耦合情形及 Freeze-In 丰度，指出重而高速的温暗物质与独特胶球暗物质可能性。
摘要：
我们研究一阶相变期间由气泡—等离子体碰撞产生暗物质的过程。我们关注暗物质区处于孤立状态、且其与可见区（包括标准模型）的相互作用源自五维和六维算符的情景。我们发现，这类暗物质通常质量较大，并具有很大的初始速度，从而可能导致暗物质在今天表现为温暗物质。我们区分了弱耦合和强耦合暗区两种情形；在后一种情形中，我们重点研究胶球暗物质，结果表明它具有非常独特的现象学性质。我们还系统计算了暗区的 Freeze-In（凝入）产生过程，并将其与气泡—等离子体产生的暗物质丰度进行比较。
英文摘要：
We study Dark Matter production during first order phase transitions from bubble-plasma collisions. We focus on scenarios where the Dark Matter sector is secluded and its interaction with the visible sector (including the Standard Model) originates from dimension-five and dimension-six operators. We find that such DM is generally heavy and has a large initial velocity, leading to the possibility of DM being warm today. We differentiate between the cases of weakly and strongly coupled dark sectors, where, in the latter case, we focus on glueball DM, which turns out to have very distinct phenomenological properties. We also systematically compute the Freeze-In production of the dark sector and compare it with the bubble-plasma DM abundances.
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