本文選題：宇宙加速膨脹　切入點(diǎn)：全息暗能量　出處：《東北大學(xué)》2013年碩士論文

【摘要】：自1998年通過對(duì)超新星的觀測(cè)發(fā)現(xiàn)了宇宙加速膨脹以來,暗能量問題就成為了物理學(xué),天文學(xué)以及宇宙學(xué)中最重要的問題之一。對(duì)暗能量的物理本質(zhì)的研究與對(duì)上世紀(jì)60年代發(fā)現(xiàn)的暗物質(zhì)的物理本質(zhì)的研究并稱“雙暗”問題。隨著科技的發(fā)展,觀測(cè)精度的提升,以及觀測(cè)數(shù)據(jù)的累積,人類已經(jīng)進(jìn)入了精確宇宙學(xué)時(shí)代。越來越多暗能量的模型和猜想被提出,暗能量的性質(zhì)的研究也獲得了越來越廣泛的關(guān)注。在本文在引言中將介紹宇宙學(xué)發(fā)展的歷史,特別是在暗能量發(fā)現(xiàn)之后的,當(dāng)今宇宙學(xué)的研究現(xiàn)狀。在第二章中,本文將介紹宇宙學(xué)的基礎(chǔ)以及常見的暗能量模型,包括宇宙學(xué)常數(shù)模型,相互作用暗能量模型和年刻暗能量模型。在第三章中將主要介紹暗能量的觀測(cè)數(shù)據(jù)(包括超新星數(shù)據(jù)、重子聲學(xué)振蕩數(shù)據(jù)、宇宙微波背景輻射數(shù)據(jù)以及哈勃常數(shù)觀測(cè)數(shù)據(jù)),以及這些觀測(cè)數(shù)據(jù)的使用方法。第四章將介紹幾種全息暗能量模型,重點(diǎn)研究三種含有相互作用年刻暗能量模型,并使用第三章提到的觀測(cè)數(shù)據(jù)來進(jìn)行參數(shù)限制,同時(shí)進(jìn)行比較。結(jié)果說明,雖然加入相互作用會(huì)增添一個(gè)自由參數(shù),但是會(huì)大幅改善了原年刻暗能量模型。本文的另外一個(gè)目標(biāo)是比較宇宙微波背景輻射的兩種數(shù)據(jù),WMAP9和Planck,對(duì)模型的影響。結(jié)果說明,最新的Planck數(shù)據(jù)更支持含有相互作用的年刻暗能量模型。同時(shí),本文也和近期相關(guān)的重要工作進(jìn)行了對(duì)比。進(jìn)一步說明本文在數(shù)據(jù)上,方法上以及模型構(gòu)建上都有獨(dú)特的優(yōu)勢(shì)。
[Abstract]:Since the discovery of the accelerating expansion of the universe through the observation of supernovae in 1998, the dark energy problem has become one of the most important problems in physics, astronomy and cosmology.The study on the physical nature of dark energy and the physics essence of dark matter discovered in 1960s is called "double dark" problem.With the development of science and technology, the improvement of observation precision and the accumulation of observation data, mankind has entered the age of accurate cosmology.More and more models and conjectures of dark energy have been proposed, and more and more attention has been paid to the properties of dark energy.The history of cosmology development, especially after the discovery of dark energy, is introduced in this paper.In the second chapter, we will introduce the basis of cosmology and the common dark energy models, including the cosmological constant model, the interaction dark energy model and the annual dark energy model.In the third chapter, we will introduce the observation data of dark energy (including supernova data, baryon acoustic oscillation data, cosmic microwave background radiation data and Hubble constant data), as well as the use of these data.In chapter 4, several holographic dark energy models are introduced, and three kinds of models with interacting annual dark energy are studied, and the parameters are restricted by the observed data mentioned in chapter 3, and compared at the same time.The results show that although a free parameter is added to the interaction, the dark energy model of the original year can be greatly improved.Another objective of this paper is to compare the effects of two kinds of data of cosmic microwave background radiation, WMAP9 and Planck, on the model.The results show that the latest Planck data support the annual dark energy model with interaction.At the same time, this paper also compared with recent important work.Further, this paper has a unique advantage in data, method and model building.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P159
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本文編號(hào)：1713915