x
uploads/tachyon.jpg

tachyon n.速子。

tachysterol

In this master dissertation , under the fundamental frame of general relativity , we study the tachyon inflation , d - stars in the spacetime with a nonzero cosmological constant and it ' s observable effects by using some modern mathematical methods such as differential equation and qualitative analysis 本文以廣義相對論作為基本理論框架,使用微分方程及其定性理論,研究了宇宙演化和結構中的兩個問題,其中包括了快子暴漲,非零宇宙常數時空中的d星以及它的種種可觀測效應。

Then , based on above review , we propose an analytical tachyon inflation model driven by scalar field with bom - infeld - type lagrangian . we find it ' s an analytical model if we choose an exponential potential . we compute it ' s power spectrum and find that it can explain the evolution of universe 如果將勢選擇為指數勢,模型變成精確可解的,本文找到了一個精確解析的宇宙暴漲解并利用該解計算了cmb譜,發現這個解可以用來解釋宇宙的演化。

Firstly , in order to make a theoretical preparation for tachyon cosmology and d - star , we briefly review the standard hot big bang cosmology with inflation 在這個模型中,快子場作為暴漲場,即由born - infeld標量場導致宇宙暴漲。