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The evolution of the universe from an initial dramatic event, the Big-Bang, is firmly established. Hubble’s law [1] (HL) connects the velocity of galactic objects and their relative distance: v(r) = Hr, where H is the Hubble constant. In this work we suggest that HL is not valid at large distances because of total energy conservation. We propose an expansion of the velocity in terms of their relative distance and produce a better fit to the available experimental data. Using a simple “dust” universe model, we can easily calculate under which conditions an (unstable) equilibrium state can be reached and we estimate the values of the matter present in the universe as well as the “dark energy”. Within the same formalism we can derive the “deceleration parameter”. We do not need to invoke any “dark energy”, its role being played by the kinetic correction. The resulting picture is that the universe might reach an unstable equilibrium state whose fate will be decided by fluctuations: either collapse or expand forever.
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篇名 On the Expansion and Fate of the Universe
来源期刊 现代物理(英文) 学科 数学
关键词 BIG-BANG Hubble’s LAW
年,卷(期) 2012,(11) 所属期刊栏目
研究方向 页码范围 1722-1726
页数 5页 分类号 O1
字数 语种
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研究主题发展历程
节点文献
BIG-BANG
Hubble’s
LAW
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引文网络交叉学科
相关学者/机构
期刊影响力
现代物理(英文)
月刊
2153-1196
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
1826
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0
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0
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