论文标题
$ f（q）$ gravity in Phantom Dark-Emgy的后期宇宙学
Late-time cosmology with phantom dark-energy in $f(Q)$ gravity
论文作者
论文摘要
由令人兴奋的特征和最新提出的非金属标量Q功能的一般形式的动机，我们通过结果的有效的暗能能部门研究了$ f（q）$重力中的宇宙学含义，从而为黑暗能量密度，状态方程参数和减速参数提取了分析表达式。我们表明，即使在没有宇宙常数的情况下，宇宙也表现出通常的热历史，具有物质和深色能量时代的顺序，而深色能量方程式参数始终位于幻影状态下。此外，通过手头场景的提取的分析方程来计算宇宙的年龄，我们表明结果与对应于1 $σ$内的$λ$ CDM方案的值一致。此外，我们通过超新星类型IA观察数据显示了手头方案的出色共识。最后，在没有明确的宇宙学常数的情况下，将宇宙学的行为与宇宙学常数的存在之一进行比较，我们表明，$ f（q）$重力可以以非常有效的方式模仿宇宙学常数，从而提供非常相似的行为，从而揭示了在手头场景的优势和capialities。
Motivated by the exciting features and a recent proposed general form of the function of non-metricity scalar Q, we investigate the cosmological implications in $f(Q)$ gravity, through the resulting effective dark energy sector, extracting analytical expressions for the dark energy density, equation-of-state parameter and the deceleration parameters. We show that even in the absence of a cosmological constant, the universe exhibits the usual thermal history, with the sequence of matter and dark energy eras, and the dark-energy equation-of-state parameter always lie in the phantom regime. Additionally, calculating the age of the universe, through the extracted analytical equations of the scenario at hand, we show that the result coincide with the value corresponding to $Λ$CDM scenario within 1$σ$. Moreover, we show the excellent agreement of the scenario at hand with Supernovae type Ia observational data. Lastly, comparing the cosmological behavior in the case of the absence of an explicit cosmological constant, with the one of the presence of a cosmological constant we show that $f(Q)$ gravity can mimic the cosmological constant in a very efficient way, providing very similar behavior, revealing the advantages and capabilitites of the scenario at hand.
