论文标题
对特殊运行真空型号的约束
Constraints on a special running vacuum model
论文作者
论文摘要
我们使用$λ=3αH^2+3βH_0^4 h^{ - 2}+λ_0$的特殊运行真空型号（RVM），其中$α$，$β$和$λ_0$是型号参数，$ h $是hubble一个。该RVM具有用于物质和辐射的能量密度的非分析背景溶液，只能通过数值评估。通过分析CMB功率谱和Baryon声学振荡以及$α> 0 $的先前，以避免具有负暗能量密度，我们发现$α<2.83 \ 2.83 \ times 10^{ - 4} $ and $β=（-0.2^{+3.9}} _ {+3.9} _ {-4.5} _ { - 4.5} $ $ c. $ c。我们表明，RVM适合宇宙学数据与$λ$ CDM。此外，我们将波动振幅$σ_8$与中微子质量$σm_ν$联系起来。
We study a special running vacuum model (RVM) with $Λ= 3 αH^2+3βH_0^4 H^{-2}+Λ_0$, where $α$, $β$ and $Λ_0$ are the model parameters and $H$ is the Hubble one. This RVM has non-analytic background solutions for the energy densities of matter and radiation, which can only be evaluated numerically. From the analysis of the CMB power spectrum and baryon acoustic oscillation along with the prior of $α>0$ to avoid having a negative dark energy density, we find that $α<2.83\times 10^{-4}$ and $β=(-0.2^{+3.9}_{-4.5})\times 10^{-4}$ (95$\%$ C.L.). We show that the RVM fits the cosmological data comparably to the $Λ$CDM. In addition, we relate the fluctuation amplitude $σ_8$ to the neutrino mass sum $Σm_ν$.
