Particle Creation in Cosmological Models with Varying Gravitational and Cosmological “Constants”

被引：0

作者：

T. Harko

M. K. Mak

机构：

来源：

General Relativity and Gravitation | 1999年 / 31卷

关键词：

FRW UNIVERSE; VARIABLE G AND Λ; MATTER CREATION;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Einstein's field equations with variablegravitational coupling G = G(t) and decaying vacuumenergy density Λ = Λ(t) are considered asdescribing matter creation in a cosmological framework.The particle creation rate is determined by thevariation rate of both G and Λ. By consideringsimple phenomenological evolution laws for G and Lambda,an exact solution of the gravitational field equationsfor a flat Friedmann-Robertson-Walker (FRW)space-time is obtained leading to a self-consistentcosmological model describing matter and entropygeneration in the very early Universe.

引用

页码：849 / 862

页数：13

共 50 条

[1] Particle creation in cosmological models with varying gravitational and cosmological "constants"
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[J]. GENERAL RELATIVITY AND GRAVITATION, 1999, 31 (06) : 849 - 862
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