B-G S-S宇宙模型[B-G S-S Cosmological Model] - 达人(其实～我是卧底，来自外星)

2004/10/09 | B-G S-S宇宙模型[B-G S-S Cosmological Model]
类别(Ω〖物理〗) | 评论(0) | 阅读(39) | 发表于 13:20: A cosmological model that assumes the perfect cosmological principle,so that the Hubble constant H is truly a constant not only in all directions, but at all time. The experimental objection to this theory (besides the continuous creation of matter) is the cosmic background radiation.
The rate of expansion in the Bondi-Gold steady state model is given by
(1)

(Weinberg 1972, p. 459), where is the "radius" of the universe as a function of time, giving
(2)

so the volume of the universe as a function of time is given by
(3)

In this model, the deceleration parameter becomes
(4)

(Weinberg 1972, p. 459).
Denote the mass density of the universe by n, then
(5)

Therefore, in order to keep a constant density, mass must be produced at a rate of
(6)

per unit volume.
The average age is
(7)

(8)

(9)

Using
(10)

then gives; 0