论文标题
数值分析自我互动的暗物质
Numerically analyzing self-interacting dark matter
论文作者
论文摘要
我们以独立的方式考虑了与轻中介的自我相互作用暗物质（SIDM）的情况，这可以减轻小规模宇宙学的两个长期问题，即cusp cusp vs. core vs. core vse core and too-to-to-to-to-to-to-to to。选择Yukawa的电位是为了实现DM颗粒之间的介体交换，作为其自我相互作用的一部分。研究了一系列调解器质量（$ m_z' $）的自我交互转移横截面的动力学。同样，在横截面和DM颗粒的相对速度之间建立了关系，这确保了小尺度上DM危机的解决方案。与较早的作品相比，我们获得的数值结果是有效的，因为我们已经使用了较少数量的$ \ ell $模式，以达到横截面计算中相同的准确性。为了更好地了解SIDM参数空间，我们使用Hulthén电位对转移横截面对其他重要SIDM参数的依赖性进行分析分析，其行为与Yukawa的电位相似。这里还研究了使用Boltzmann方程以及Sommerfeld增强对此类计算的影响的详细演变。我们还提供了标准模型的最小无异常的嗜嗜血杆菌扩展，可以将SIDM及其介体候选者纳入框架中。
We consider the scenario of self-interacting dark matter(SIDM) with a light mediator in a model-independent way, which can alleviate two long-standing issues of the small scale cosmology namely cusp vs. core and too-big-to-fail. A Yukawa potential is chosen to achieve mediator exchange between DM particles as part of their self-interactions. The dynamics of self-interacting transfer cross-section are studied for a range of mediator mass($m_Z'$). Also, a relationship is established between the cross-section and DM particles' relative velocity, which ensures the solution to the DM crisis at small scales. Our obtained numerical results are efficient compared to the earlier works in the context that a lesser number of $\ell$ modes have been used by us to achieve the same level of accuracy in the cross-section calculations. For a better understanding of the SIDM parameter space, we perform an analytical analysis on the dependence of transfer cross-section over the other important SIDM parameters using a Hulthén potential which is similar in its behavior to Yukawa potential. A detailed evolution of particle dynamics using the Boltzmann equation and the effect of Sommerfeld enhancement on such calculations has also been studied here. We also provide a minimal anomaly-free leptophilic extension of the standard model, that can incorporate SIDM and its mediator candidate in the framework.
