| The physical properties of dark energy universe and dark energy celestial bodies are studied in this thesis. The Chapter1introduced the observation of accelerated expansion of the universe and dark energy universe models; The Chapter2derived the basic equations of general relativity and cosmology; The Chapter3discussed the4-D universe model with strange matter and dark energy; The Chapter4constructed a decay vacuum energy model, it synthetically considered the contributions of matter, scalar field and decay vacuum energy; The Chapter5studied the modified classical model for the primordial helium abundance, and calculated the constraint ranges of the dark energy and high energy photon of early universe by the observation datas of helium abundance; The Chapter6studied a sine-Gordon soliton star model with the coupling of dark energy and Fermi matter, analysed the conditions that the dark energy in the center of star to arrive at a stable state; The Chapter7obtained a black hole solution in (2+1) dimensional gravity with Chern-Simons gauge field coupling, calculated asymptotic distribution parameters to the current density of electromagnetic field.The new works of this thesis are as follows:1. A4-D universe model with the action of strange matter and dark energy is discussed by using trial solution method.2. The exact cosmology solutions are obtained for the accelerated and decelerated expansion process in a decay vacuum energy model, the various cosmological parameters are given by using the magnitude-redshift observation date for186Type Ia supernovae, and the cosmic ages of the two process are calculated. Moreover, the physical parameters of the model in a perturbation case are analysed and discussed.3. The constraint ranges of the dark energy and high energy photon in early universe are given by the observation datas of the helium abundance.4. The sine-Gordon soliton star model with mix of Brans-Dicke scalar field and condensed Fermi pairs are studied, the result indicate the dark energy in the center of star can arrived at stable state when coupling coefficient satisfies some constraint conditions.5. The physical properties in (2+1) dimensional gravity with the action of Chern-Simons gauge field are analyzed, a new black hole solution with the coupling of dark energy and ghost field are obtained. Moreover, the asymptotic distribution indexes of the electromagnetic field are also calculated. |
