论文标题
TSALLIS全息暗能场景中的宇宙学扰动
Cosmological perturbations in the Tsallis holographic dark energy scenarios
论文作者
论文摘要
我们在扰动生长的背景下研究了Tsallis全息暗能量（THDE）模型。我们通过考虑全息原理和非添加熵来实现黑暗能量的描述。我们实施了扰动的相对方程来实现物质波动的增长，因为在低红移时，宇宙结构的增长率是不可忽略的。为了限制和比较模型，我们使用最近的几何和生长速率观察数据进行了贝叶斯分析。主要结果是：（i）模型与宇宙学观测值兼容，（ii）宇宙学常数以$1σ$的置信度恢复，此外，他们可以越过幻影屏障。最后，模型可以缓解$ \ \1σ$ $σ_8$张力在非簇的情况下，并且可以减轻$ \ \ \2.8σ$ the $ h_0 $张力。从模型选择的角度来看，数据丢弃了THDE模型。
We investigate the Tsallis holographic dark energy (THDE) models in the context of perturbations' growth. We assume the description of dark energy by considering the holographic principle and the nonadditive entropy to carry out this. We implement the perturbed relativistic equations to achieve the growth of matter fluctuations, being the growth rate of the cosmic structures is non-negligible at low redshifts. To constrain and compare the models, we carry out the Bayesian analysis using the recent geometrical and growth rate observational data. The main results are: (i) the models are compatible with cosmological observations, (ii) the cosmological constant recovered with a $1σ$ confidence level, furthermore (iii) they could cross the phantom barrier. Finally, the models can relieve $\approx 1σ$ the $σ_8$ tension in the non-clustered case and can alleviate in $\approx 2.8σ$ the $H_0$ tension. From the model selection viewpoint, the data discarded the THDE models.
