暗能量暗物质相互作用动力学研究
发布时间：2018-11-14 14:33
【摘要】：随着天文观测技术手段的不断进步,越来越多的实验证据显示宇宙膨胀速度非但没有在自身引力的吸引下变慢,反而在一种看不见的、神秘力量的控制、推动下变快。这一个完全出乎意料的观测结果,从根本上动摇了人们对宇宙的传统理解。人们将这种神秘的推动力的来源,称为“暗能量”。暗能量是近二十多年以来,宇宙学乃至物理学中最重要的发现。它的存在向人类发起了一场新的认知世界的挑战。对暗能量的研究将带来一场革命,其深刻程度不亚于上个世纪的两场物理学革命。因此“科学”杂志将暗能量列为本世纪人类所面临的十大未解决科学难题之首。 本文以暗能量为主要研究对象,以暗能量可能具有惯性这一深刻力学属性为出发点,讨论暗能量、暗物质相互作用体系的基本动力学性质,并就相互作用在天文实验上被观测到的可能性进行探讨,为暗能量研究提供一个新的思路与途径。 本文的主要内容如下：第一章,我们将介绍相互作用体系的基本动力学方程以及它的宇宙学扰动形式；第二章,我们将介绍暗能量、暗物质相互作用模型,并讨论它的稳定性；第三章,我们将讨论相互作用在宇宙微波背景辐射中被观测到的可能性；第四章,我们将介绍相互作用对结构形成的影响；第五章,我将讨论有Gauss-Bonnet曲率修正的DGP修改引力模型；第六章,我们将总结并展望未来。
[Abstract]:With the development of astronomical observation technology, more and more experimental evidence shows that the expansion speed of the universe has not been slowed by the attraction of its own gravity, but accelerated by the control of an invisible, mysterious force. This completely unexpected observation fundamentally shook the traditional understanding of the universe. The source of this mysterious driving force is called dark energy. Dark energy is one of the most important discoveries in cosmology and physics in recent twenty years. Its existence has created a new challenge to human beings to recognize the world. The study of dark energy will lead to a revolution no less profound than the two physical revolutions of the last century. Therefore, Science lists dark energy as the top ten unsolved scientific problems in this century. In this paper, the basic dynamic properties of the interaction system of dark energy and dark matter are discussed by taking dark energy as the main research object and taking the deep mechanical property of dark energy as the starting point. The possibility of the interaction observed in astronomical experiments is discussed in order to provide a new idea and approach for the study of dark energy. The main contents of this paper are as follows: in the first chapter, we will introduce the basic dynamic equation of the interaction system and its cosmological perturbation form, in the second chapter, we will introduce the dark energy, dark matter interaction model, and discuss its stability. In chapter 3, we will discuss the possibility of interaction observed in cosmic microwave background radiation, and in chapter 4, we will describe the influence of interaction on structure formation. In Chapter 5, I will discuss the modified DGP gravitation model with Gauss-Bonnet curvature correction; in Chapter 6, we will summarize and look forward to the future.
【学位授予单位】：复旦大学
【学位级别】：博士
【学位授予年份】：2011
【分类号】：P145.9
本文编号：2331437
[Abstract]:With the development of astronomical observation technology, more and more experimental evidence shows that the expansion speed of the universe has not been slowed by the attraction of its own gravity, but accelerated by the control of an invisible, mysterious force. This completely unexpected observation fundamentally shook the traditional understanding of the universe. The source of this mysterious driving force is called dark energy. Dark energy is one of the most important discoveries in cosmology and physics in recent twenty years. Its existence has created a new challenge to human beings to recognize the world. The study of dark energy will lead to a revolution no less profound than the two physical revolutions of the last century. Therefore, Science lists dark energy as the top ten unsolved scientific problems in this century. In this paper, the basic dynamic properties of the interaction system of dark energy and dark matter are discussed by taking dark energy as the main research object and taking the deep mechanical property of dark energy as the starting point. The possibility of the interaction observed in astronomical experiments is discussed in order to provide a new idea and approach for the study of dark energy. The main contents of this paper are as follows: in the first chapter, we will introduce the basic dynamic equation of the interaction system and its cosmological perturbation form, in the second chapter, we will introduce the dark energy, dark matter interaction model, and discuss its stability. In chapter 3, we will discuss the possibility of interaction observed in cosmic microwave background radiation, and in chapter 4, we will describe the influence of interaction on structure formation. In Chapter 5, I will discuss the modified DGP gravitation model with Gauss-Bonnet curvature correction; in Chapter 6, we will summarize and look forward to the future.
【学位授予单位】：复旦大学
【学位级别】：博士
【学位授予年份】：2011
【分类号】：P145.9
【共引文献】
相关期刊论文 前1条
1 ZHANG Ming;SUN ChengYi;YANG ZhanYing;YUE RuiHong;;Cosmological evolution of quintessence with a sign-changing interaction in dark sector[J];Science China(Physics,Mechanics & Astronomy);2014年09期
，本文编号：2331437
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