发表机构
School of Physics and Astronomy, Beijing Normal University（北京师范大学物理学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究含玻色-爱因斯坦凝聚组分的玻色型温暗物质的量子统计效应，推导多通道热平均湮灭截面，确定临界凝聚组分，给出满足现今相互作用率条件的暗区参数空间区域。
AI 中文摘要
我们研究玻色型温暗物质（BWDM）的量子统计性质对由汤川耦合介导的微观相互作用暗区模型的影响，考虑包含玻色-爱因斯坦凝聚（BEC）组分的BWDM场景。通过将BWDM的相空间分布分离为热组分和凝聚组分，我们推导了热-热、热-凝聚、凝聚-凝聚通道的热平均湮灭截面，湮灭过程中纳入长程标量相互作用及其索末菲增强效应。研究发现，凝聚组分为控制微观暗区能量转移提供了额外的量子统计自由度，热-热主导区域与凝聚-凝聚主导区域之间的转变由临界凝聚组分r_c表征，r_c主要由BWDM质量和暗能量标量场质量决定。当凝聚组分高于该临界值时，凝聚-凝聚通道主导现今的相互作用率。通过设定现今相互作用率不超过哈勃膨胀率的条件，我们确定了满足该条件的暗区参数空间对应区域。
英文摘要
We investigate the impact of the quantum statistical properties of bosonic warm dark matter (BWDM) on a microscopic interacting dark-sector model mediated by a Yukawa coupling. We consider a BWDM scenario containing a Bose--Einstein condensed (BEC) component. By separating the BWDM phase-space distribution into thermal and condensate components, we derive the thermally averaged annihilation cross sections for the thermal--thermal, thermal--condensate, and condensate--condensate channels. The long-range scalar interaction and its Sommerfeld enhancement are included in the annihilation processes. We find that the condensate fraction provides an additional quantum-statistical degree of freedom controlling the microscopic dark-sector energy transfer. In particular, the transition between the thermal--thermal dominated regime and the condensate--condensate dominated regime is characterized by a critical condensate fraction r_c, which is mainly determined by the BWDM mass and the dark energy scalar field mass. For condensate fractions above this critical value, the condensate--condensate channel dominates the present-day interaction rate. By imposing the condition that the present-day interaction rate does not exceed the Hubble expansion rate, we determine the corresponding region of the dark-sector parameter space satisfying this condition.
