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Interacting Holographic Dark Energy, the Present Accelerated Expansion and Black Holes
Gravitation and Cosmology ( IF 0.9 ) Pub Date : 2020-09-21 , DOI: 10.1134/s020228932003010x
Bibekananda Nayak

Abstract

We study the evolution of the universe by assuming an integrated model, which involves interacting dark energy and the holographic principle with the Hubble scale as an IR cutoff. First we determine the interaction rate at which matter is converting to dark energy. At the next step, we evaluate the equation of state parameter which describes the nature of dark energy. Our result predicts that the present state of the universe is dominated by quintessence type dark energy, and it will become phantom dominated in the near future. Again, our analysis successfully addresses the problem of present accelerated expansion of the universe and softens the coincidence problem. We also find that the universe was previously undergoing a decelerated phase of expansion and a transition from deceleration to acceleration should have occurred at a time \(t_{q=0}=0.732t_{0}\), where \(t_{0}\) is the present age of the universe. Finally, we discuss the evolution of black holes in this environment.



中文翻译:

相互作用的全息暗能量,目前的加速膨胀和黑洞

摘要

我们通过假设一个集成模型来研究宇宙的演化,该模型涉及将暗能量和全息原理与哈勃尺度作为红外截止相互作用。首先,我们确定物质转化为暗能量的相互作用速率。在下一步中,我们评估状态方程的参数,该方程描述了暗能量的性质。我们的结果表明,宇宙的当前状态由典型类型的暗能量主导,并且在不久的将来它将变为幻象主导。同样,我们的分析成功地解决了当前宇宙加速膨胀的问题,并软化了巧合问题。我们还发现,宇宙先前经历了减速的膨胀阶段,应该同时发生从减速到加速的过渡\(t_ {q = 0} = 0.732t_ {0} \),其中\(t_ {0} \)是宇宙的当前年龄。最后,我们讨论了这种环境中黑洞的演变。

更新日期:2020-09-21
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