宇宙方程[Cosmological Equations] - 达人(其实～我是卧底，来自外星)

2004/10/17 | 宇宙方程[Cosmological Equations]
类别(Ω〖物理〗) | 评论(0) | 阅读(65) | 发表于 10:46: The cosmological equations are
(1)

(Weinberg 1972, p. 614) and
(2)

where R is the distance scale,is the cosmological constant, and
(3)

is the universe's radius of curvature. The qualitative behavior of R(t) is determined from (1), and the three resulting solution regimes are called the de Sitter, Friedmann-Lemaître Cosmological Model, and
Defining
(4)

and integrating (1) gives
(5)

(6)

(1) and (2) can be rewritten as
(7)

and
(8)

Taking gives
(9)

which can be rewritten as
(10); 0