暴涨指数的随机理论On Stochastic Theory of the Number of Inflationary Efolds
张建华
摘要(Abstract):
回顾了现代宇宙学的历史和现状,从Friedmann方程出发,将标量场的量子涨落作为Gaussian白噪声,建立了反映宇宙暴涨过程的Langevin方程,得到尺度因子的均值、自相关系数和方差;特别是详细计算了暴涨指数,发现用这种方法得到的暴涨指数与经典结果差异甚微.
关键词(KeyWords): 暴涨;Gaussian白噪声;Langevin方程;暴涨指数
基金项目(Foundation):
作者(Author): 张建华
DOI: 10.16393/j.cnki.37-1436/z.2005.05.005
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