论文标题
Tsallis全息暗能量模型具有事件地平线临界值
Tsallis holographic dark energy model with event horizon cutoff in modified gravity
论文作者
论文摘要
我们考虑了Nojiri-odintsov重力框架中的Tsallis全息暗能量模型，$ f（r）= r+λr^2-σμ/{r} $。对于IR截止事件，进行了视野。研究了这种宇宙的宇宙演化，以针对参数的各种初始条件和值进行研究。将来的时间里，哈勃参数$ h $的依赖性具有振荡。结果表明，对于$μ\ neq 0 $奇异性的外观是典型的，从宇宙学角度来看，这些奇点的时间可能相对较小。奇异性与$ r $上的$ f（r）$的第二个散散代理相关。有趣的是，这些模型可以描述来自IA超新星天体物理学的观察数据以及来自Redshift $ Z $的Hubble参数的依赖性，至少不比规范$λ$ CDM模型差。
We considered the Tsallis holographic dark energy model in frames of Nojiri-Odintsov gravity with $f(R)=R+λR^2-σμ/{R}$. For IR cutoff event horizon is taken. The cosmological evolution of such universe is investigated for various initial conditions and values of parameters. The dependence of the Hubble parameter $H$ from time in the future has an oscillations. It is shown that for $μ\neq 0$ appearance of singularities are typical and the time up to these singularities can be relatively small from cosmological viewpoint. The singularity is associated with the zero of second deribative of $f(R)$ on $R$. It is interesting to note that these models can describe observational data from Ia supernovae astrophysics and dependence of the Hubble parameter from redshift $z$ at least not worse than canonical $Λ$CDM model.
