论文标题
修改的全息能量密度驱动的通货膨胀和一些宇宙学结果
Modified Holographic energy density driven inflation and some cosmological outcomes
论文作者
论文摘要
由Nojiri等人的工作激励。 （2019）[S. Nojiri，S。D。Odintsov和E. N. Saridakis，全息膨胀，物理。 Lett。 B 797（2019）134829]，本研究报告了一种通货膨胀状态的通货膨胀模型，即通货膨胀状态是由一种全息能量密度的类型。红外临界值是基于修改的全息模型选择的，该模型是Nojiri-Odintsov全息暗能量\ cite {odi1}的特殊情况，该模型\ cite {odi1}，该{odi1}在较晚的宇宙加速下统一了幻影通胀。在获得哈勃参数的分析解决方案时，我们认为存在散装粘度和状态参数的有效方程似乎与通货膨胀方案一致。还可以观察到，在通货膨胀的情况下，块状粘度的贡献并不重要，随着宇宙的发展，其影响也在增加。已经计算了该模型的通货膨胀可观察力，并且已经计算了慢速参数。最后，已经观察到，$ n_s -r $中的轨迹与普朗克发现的观察界兼容。已经得出结论，该模型的标量比也可以解释早期宇宙中的原始波动。
Motivated by the work of Nojiri et al. (2019) [S. Nojiri, S. D. Odintsov and E. N. Saridakis, Holographic inflation, Phys. Lett. B 797 (2019) 134829], the present study reports a model of inflation under the consideration that the inflationary regime is originated by a type of holographic energy density. The infrared cutoff has been selected based on the modified holographic model that is a particular case of Nojiri-Odintsov holographic dark energy \cite{odi1} that unifies phantom inflation with the acceleration of the universe on late-time. On getting an analytical solution for Hubble parameter we considered the presence of bulk viscosity and the effective equation of state parameter appeared to be consistent with the inflationary scenario with some constraints. It has also been observed that in the inflationary scenario the contribution of bulk viscosity is not of much significance and its influence is increasing with the evolution of the universe. Inflationary observables have been computed for the model and the slow-roll parameters have been computed. Finally, it has been observed that the trajectories in $n_s - r$ are compatible with the observational bound found by Planck. It has been concluded that the tensor to scalar ratio for this model can explain the primordial fluctuation in the early universe as well.
