当前位置: X-MOL 学术Phys. Rev. D › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dynamical dark sectors and neutrino masses and abundances
Physical Review D ( IF 5 ) Pub Date : 
Weiqiang Yang, Eleonora Di Valentino, Olga Mena, Supriya Pan

We investigate generalized interacting dark matter-dark energy scenarios with a time-dependent coupling parameter, allowing also for freedom in the neutrino sector. The models are tested in the phantom and quintessence regimes, characterized by an equation of state wx1, respectively. Our analyses show that for some of the scenarios the existing tensions on the Hubble constant H0 and on the clustering parameter S8 can be significantly alleviated. The relief is either due to {(a)} a dark energy component which lies within the phantom region; or {(b)} the presence of a dynamical coupling in quintessence scenarios. The inclusion of massive neutrinos into the interaction schemes does not affect neither the constraints on the cosmological parameters nor the bounds on the total number or relativistic degrees of freedom $N_{\rm eff}$, which are found to be extremely robust and, in general, strongly consistent with the canonical prediction $N_{\rm eff}=3.045$. The most stringent bound on the total neutrino mass Mν is $M_{}

中文翻译:

动态暗区和中微子的质量和丰度

我们研究与时间相关的耦合参数的广义相互作用的暗物质-暗能量情景,同时也允许中微子领域的自由。这些模型在幻像和精粹状态下进行了测试,以状态方程为特征wX-1个, 分别。我们的分析表明,在某些情况下,哈勃常数存在的张力H0 并在聚类参数上 小号8可以大大缓解。缓解是由于{(a)}位于幻影区域内的暗能量成分引起的;或者 或{(b)}在典型情况下存在动态耦合。将大量中微子纳入相互作用方案既不会影响宇宙学参数的约束,也不会影响总数或相对论自由度$ N _ {\ rm eff} $的边界,这被认为是非常可靠的,并且通常,与规范预测$ N _ {\ rm eff} = 3.045 $高度一致。中微子总质量的最严格限制中号ν 是$ M_ {}
更新日期:2020-07-09
down
wechat
bug