【摘要】：本文對(duì)暗能量宇宙與暗能量天體的物理性質(zhì)進(jìn)行了研究。第一章簡(jiǎn)要介紹了宇宙加速膨脹的觀測(cè)和暗能量宇宙模型；第二章推導(dǎo)了廣義相對(duì)論與宇宙學(xué)的基本方程；第三章討論了具有奇異物質(zhì)與暗能量作用的四維宇宙模型；第四章建立了衰減真空能模型,綜合考慮了物質(zhì)、標(biāo)量場(chǎng)和衰減真空能的貢獻(xiàn)；第五章研究了原初氦豐度的修正經(jīng)典模型,并計(jì)算了氦豐度的觀測(cè)值對(duì)早期宇宙中暗能量和高能光子的約束；第六章研究了暗能量和費(fèi)米物質(zhì)耦合的sine-Gordon孤子星模型,分析了星體中心暗能量達(dá)到穩(wěn)定狀態(tài)所滿足的條件；第七章獲得了Chern-Simons規(guī)范場(chǎng)耦合的(2+1)維引力模型中的黑洞解,計(jì)算了電磁場(chǎng)流密度的漸近分布參量。 本論文中具有創(chuàng)新性的工作如下： 1、采用試探解的方法討論了具有奇異物質(zhì)與暗能量作用的四維宇宙模型。 2、首次發(fā)現(xiàn)了衰減真空能模型中在減速和加速膨脹階段的精確宇宙解,采用186個(gè)Ia型超新星的視星等-紅移觀測(cè)數(shù)據(jù),給出了各種宇宙學(xué)參量的數(shù)值,計(jì)算出了這兩個(gè)階段的宇宙年齡。此外,在具有擾動(dòng)的情況下,對(duì)該模型中的物理參量進(jìn)行了分析和討論。 3、根據(jù)氦豐度的觀測(cè)值給出了早期宇宙中暗能量和高能光子的約束范圍。 4、研究了Brans-Dicke標(biāo)量場(chǎng)和凝聚費(fèi)米對(duì)混合的sine-Gordon孤子星模型。結(jié)果表明,當(dāng)耦合系數(shù)滿足一定約束條件時(shí),星體中心的暗能量可達(dá)到穩(wěn)定狀態(tài)。 5、分析了Chern-Simons規(guī)范場(chǎng)作用的(2+1)維引力的物理性質(zhì),得到了具有暗能量鬼場(chǎng)耦合的一種新的黑洞解,另外,還計(jì)算了電磁場(chǎng)的漸近分布指數(shù)。
[Abstract]:In this paper, the physical properties of dark energy universe and dark energy objects are studied. The first chapter briefly introduces the observation and dark energy cosmic model of the accelerated expansion of the universe, the second chapter deduces the basic equations of general relativity and cosmology, the third chapter discusses the four-dimensional cosmic model with the action of strange matter and dark energy. In chapter 4, the attenuated vacuum energy model is established, which takes into account the contribution of matter, scalar field and attenuated vacuum energy. In chapter 5, the modified classical model of the original helium abundance is studied, and the constraints of the observed helium abundance on dark energy and high energy photons in the early universe are calculated. In chapter 6, the sine-Gordon solitary star model coupled with dark energy and Fermi matter is studied, and the conditions under which the dark energy in the center of the star reaches the stable state are analyzed. In chapter 7, the black hole solution in the (21) dimensional gravitational model coupled by the Chern-Simons gauge field is obtained, and the asymptotic distribution parameters of the flow density of the electromagnetic field are calculated. The innovative work in this thesis is as follows: 1. The four-dimensional cosmic model with the interaction of singular matter and dark energy is discussed by using the method of exploratory solution. 2. The exact cosmic solutions in the deceleration and accelerated expansion stages of the attenuated vacuum energy model are found for the first time. The magnitude-redshift observation data of 186 Ia supernovae are used, and the values of various cosmological parameters are given. The cosmic ages of these two stages are calculated. In addition, the physical parameters in the model are analyzed and discussed in the case of disturbance. 3. According to the observations of helium abundance, the constrained ranges of dark energy and high energy photons in the early universe are given. 4. The sine-Gordon solitary star model of Brans-Dicke scalar field and condensed Fermi pair mixing is studied. The results show that the dark energy in the center of the star can reach a stable state when the coupling coefficient satisfies a certain constraint condition. 5. The physical properties of (21) dimension gravitation of Chern-Simons gauge field are analyzed, and a new black hole solution with dark energy ghost field coupling is obtained. In addition, the asymptotic distribution index of electromagnetic field is also calculated.
【學(xué)位授予單位】：四川師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：P159;P145.9

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