Non-relativistic spacetimes with cosmological constant
Non-relativistic spacetimes with cosmological constant
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DOI：
10.1088/0264-9381/16/2/013
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发表时间：
1998-01
影响因子：
3.5
通讯作者：
R. Aldrovandi;A. Barbosa;L. Crispino;J. G. Pereira
中科院分区：
文献类型：
--
作者：
R. Aldrovandi;A. Barbosa;L. Crispino;J. G. Pereira
最近关于超新星的数据显示宇宙学常数的值较高。具有宇宙学常数的时空具有与伽利略运动学完全不同的非相对论运动学。德西特时空是爱因斯坦方程的真空解，具有一个宇宙常数，在非相对论极限下约化为牛顿-胡克时空，这是一个具有非零曲率的非度量均匀时空。整个非相对论运动学将被修改，可能会对宇宙学产生影响，特别是对质量缺失问题。
Recent data on supernovae favour high values of the cosmological constant. Spacetimes with a cosmological constant have non-relativistic kinematics quite different from Galilean kinematics. de Sitter spacetimes, vacuum solutions of Einstein's equations with a cosmological constant, reduce in the non-relativistic limit to Newton-Hooke spacetimes, which are non-metric homogeneous spacetimes with non-vanishing curvature. The whole non-relativistic kinematics would then be modified, with possible consequences to cosmology, and in particular to the missing-mass problem.