暗物质束缚态简单化
Dark matter bound-states made easy
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中文总结 AI 辅助
本文提出一种基于解析极限的半解析处方，简化了包含轻力载体和束缚态效应的暗物质冻结计算，并以$U(1)$模型为例展示了其有效性。
中文摘要 AI 辅助
一种轻力载体可以在暗物质粒子之间介导长程相互作用，并促进束缚态的形成。近年来，包含这些特征的模型引起了相当大的关注，在束缚态的理论理解及其对与观测到的暗物质遗迹丰度一致的参数空间的影响方面都取得了显著进展。然而，相关结果及其在玻尔兹曼方程中的一致实现仍然在技术上错综复杂，需要仔细处理或使用专门的工具。这种复杂性阻碍了这些发现的更广泛采用，并将其使用限制在少数专家小组中。为了应对这一挑战，我们提出了一种基于相关速率解析极限的简单处方，该处方允许通过一个直接的半解析处方来细化标准冻结计算，该处方捕捉了完整计算的主要特征。我们通过一个带有轻力载体的$U(1)$暗物质模型（包括索末菲增强和束缚态效应）来说明这种方法。
英文摘要
A light force carrier can mediate long-range interactions between dark matter particles and facilitate the formation of bound states. Models incorporating these features have attracted considerable attention in recent years, with significant advances in both the theoretical understanding of such bound states and their impact on the parameter space consistent with the observed dark matter relic abundance. However, the relevant results and their consistent implementation in Boltzmann equations remain technically intricate, requiring careful treatment or the use of specialized tools. This complexity has hindered broader adoption of these findings and restricted their use to a small number of expert groups. To address this challenge, we propose a simple prescription based on the analytic limits of the relevant rates, which allows standard freeze-out computations to be refined through a straightforward semi-analytical prescription that captures the main features of the full calculation. We illustrate this approach for a $U(1)$ dark matter model with a light force carrier, including Sommerfeld enhancement and bound-state effects.
发表机构
- Institute of Physics, University of Freiburg（弗赖堡大学物理研究所）
机构由 AI 辅助整理，请以论文原文为准。
