【摘要】：隨著天文觀測技術手段的不斷進步,越來越多的實驗證據(jù)顯示宇宙膨脹速度非但沒有在自身引力的吸引下變慢,反而在一種看不見的、神秘力量的控制、推動下變快。這一個完全出乎意料的觀測結果,從根本上動搖了人們對宇宙的傳統(tǒng)理解。人們將這種神秘的推動力的來源,稱為“暗能量”。暗能量是近二十多年以來,宇宙學乃至物理學中最重要的發(fā)現(xiàn)。它的存在向人類發(fā)起了一場新的認知世界的挑戰(zhàn)。對暗能量的研究將帶來一場革命,其深刻程度不亞于上個世紀的兩場物理學革命。因此“科學”雜志將暗能量列為本世紀人類所面臨的十大未解決科學難題之首。 本文以暗能量為主要研究對象,以暗能量可能具有慣性這一深刻力學屬性為出發(fā)點,討論暗能量、暗物質相互作用體系的基本動力學性質,并就相互作用在天文實驗上被觀測到的可能性進行探討,為暗能量研究提供一個新的思路與途徑。 本文的主要內容如下：第一章,我們將介紹相互作用體系的基本動力學方程以及它的宇宙學擾動形式；第二章,我們將介紹暗能量、暗物質相互作用模型,并討論它的穩(wěn)定性；第三章,我們將討論相互作用在宇宙微波背景輻射中被觀測到的可能性；第四章,我們將介紹相互作用對結構形成的影響；第五章,我將討論有Gauss-Bonnet曲率修正的DGP修改引力模型；第六章,我們將總結并展望未來。
[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.
【學位授予單位】：復旦大學
【學位級別】：博士
【學位授予年份】：2011
【分類號】：P145.9

【共引文獻】

相關期刊論文 前1條

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

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本文編號：2331437