暗能量模型及对宇宙黑洞质量影响的研究

发布时间：2018-01-27 02:23

本文关键词： 黑洞 Agegraphic暗能量 FRW宇宙不自洽　出处：《西北大学》2012年硕士论文　论文类型：学位论文

【摘要】：自1998年发现宇宙加速膨胀以来,暗能量问题就成为宇宙学研究的一个重要问题。本论文第一章从宇宙的动力学和加速膨胀谈起；在第二章介绍了当前宇宙学主要的几种暗能量模型；在第三章我们讨论了一种叫Agegraphic暗能量模型的不自洽之处,同时回顾了最初的Agegraphic暗能量模型在物质为主时期Agegraphic暗能量的变化趋势跟随物质变化趋势的矛盾,在此基础上上进一步指出这个模型中存在着另外一些更为严重的矛盾,即宇宙处于物质为主时期与Agegraphic暗能量实现驱动宇宙膨胀之间的矛盾。通过分析了三种不同类型的Agegraphic暗能量和物质之间的表象相互作用,我们发现即使在相互作用模型下,物质为主时期与Agegraphic暗能量实现驱动宇宙膨胀之间的矛盾依然存在。如果我们的宇宙正处在一个加速膨胀的阶段,黑洞质量在一个膨胀的宇宙中是如何演化就成为一个有趣的话题。在本论文第四章,我们采用一个镶切在平直时空的宇宙黑洞解,以无径向流非理想流体为宇宙物质分布,我们得到了一个用宇宙参数项表示的黑洞质量演化方程。结果表明,在phantom暗能量模型下,我们得到的演化方程允许黑洞质量一直增加下去。由此我们得出结论：采用不同的宇宙物质分布模型,宇宙黑洞质量的演化也将不同。
[Abstract]:Since the discovery of accelerating expansion of the universe in 1998, dark energy has become an important issue in cosmology. In the second chapter, several main dark energy models in cosmology are introduced. In Chapter 3, we discuss the inconsistency of a dark energy model called Agegraphic. At the same time, the variation trend of Agegraphic dark energy in the initial Agegraphic dark energy model is reviewed. On this basis, it is further pointed out that there are some other more serious contradictions in this model. That is, the contradiction between the universe in the period when matter is dominant and the realization of Agegraphic dark energy driving the expansion of the universe. By analyzing three different types of Agegraphic dark energy and matter, Apparent interaction. It is found that even in the interaction model, the contradiction between the dominant period of matter and the Agegraphic dark energy driving the expansion of the universe still exists. If our universe is in a phase of accelerating expansion, how black hole mass evolves in an expanding universe is an interesting topic. Chapter 4th of this paper. In this paper, we adopt a solution of a cosmic black hole with a tangent space and time, and take the nonideal fluid without radial flow as the distribution of cosmic matter. We obtain a mass evolution equation of the black hole expressed by the terms of cosmic parameters. The results show that the equation can be used to describe the mass evolution of the black hole. Under the phantom dark energy model, the evolution equation we obtained allows the black hole mass to increase continuously, and we conclude that different cosmic mass distribution models are adopted. The mass evolution of cosmic black holes will also be different.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：P159

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