Title: Probing the interaction between dark matter and dark energy in the presence of massive neutrinos Show Chinese title

Title: 探测大质量中微子存在时暗物质与暗能量的相互作用

Abstract: We consider the possibility of an interaction in the dark sector in the presence of massive neutrinos, and study the observational constraints on three different scenarios of massive neutrinos using the most recent CMB anisotropy data in combination with type Ia supernovae, baryon acoustic oscillations, and Hubble parameter measurements. When a sterile neutrino is introduced in the interacting dark sector scenario in addition to the standard model prediction of neutrinos, we find that the coupling parameter, characterizing the interaction between dark matter and dark energy, is non-zero at 2$\sigma$ confidence level. The interaction model with sterile neutrino is also found to be a promising one to alleviate the current tension on Hubble constant. We do not find the evidence for a coupling in the dark sector when the possibility of a sterile neutrino is discarded. Show Chinese abstract

Abstract: 我们研究了在存在大质量中微子的情况下暗物质内部相互作用的可能性，并结合最近年份的宇宙微波背景各向异性数据以及I型超新星、重子声波振荡和哈勃参数测量数据，探讨了三种不同的大质量中微子情景的观测限制。 当在一个含有相互作用暗物质的场景中引入惰性中微子时，我们发现表征暗物质与暗能量之间相互作用的耦合参数在2$\sigma$置信水平下非零。 研究还发现，含有惰性中微子的相互作用模型在缓解哈勃常数当前张力方面具有前景。 当我们排除惰性中微子的可能性时，未发现暗物质内部存在耦合的证据。