论文标题
在散装粘度存在下的全息暗能的广义版本及其通过慢速参数的通货膨胀动力学的宇宙学
Cosmology of a generalised version of holographic dark energy in presence of bulk viscosity and its inflationary dynamics through slow roll parameters
论文作者
论文摘要
本研究报告了具有高阶衍生物的黑暗能量（DE）模型的重建方案，这是Nojiri-Odintsov全息DE的特殊情况[S. S. Nojiri和S. D. Odintsov，Relativ。引力。 38（2006）1285。]这将幻影通胀与末日的加速度统一。重建是在存在散装粘度的情况下进行的，其中散装粘性压力已被视为哈勃参数的函数。宇宙时间$ t $的范围是为国家方程（EOS）参数方程式的精髓，宇宙常数和幻影行为得出的。在粘性的情况下，已经在相互作用和非相互作用的情况下进行了重建，并且在两种情况下都观察到了针对小扰动的稳定性。最后，已经研究了慢速参数，并观察到了从通货膨胀的出口范围。同样，已经证明了准指数扩展的可用性用于相互作用的粘性场景，并且通过张量与标量比进行了研究，确保了该模型与普朗克的观察性界限的一致性。随着原始波动，已经发现相互作用的情景会产生强大的耗散状态。
The present study reports a reconstruction scheme of a Dark Energy (DE) model with higher order derivative of Hubble parameter, which is a particular case of Nojiri-Odintsov holographic DE [S. Nojiri and S. D. Odintsov, Gen. Relativ. Gravit. 38 (2006) 1285.] that unifies phantom inflation with the acceleration of te universe on late-time. The reconstruction has been carried out in presence of bulk-viscosity, where the bulk-viscous pressure has been taken as a function of Hubble parameter. Ranges of cosmic time $t$ have been derived for quintessence, cosmological constant and phantom behaviour of the equation of state (EoS) parameter. In the viscous scenario, the reconstruction has been carried out in an interacting and non-interacting situations and in both the cases stability against small perturbations has been observed. Finally, the slow roll parameters have been studied and a scope of exit from inflation has been observed. Also, availability of quasi exponential expansion has been demonstrated for interacting viscous scenario and a study through tensor to scalar ratio has ensured consistency of the model with the observational bound by Planck. Alongwith primordial fluctuations the interacting scenario has been found to generate strong dissipative regime.
