暗能量对大尺度宇宙结构质量和尺寸的约束
Dark Energy Constraints on Masses and Sizes of Large Scale Cosmic Structures
摘要：
对于大尺度宇宙结构，引力束缚自能密度必须至少等于背景排斥暗能量密度，这一要求意味着质量-半径关系为M/R ^2 ~ 1 g/cm ^2，如前所述。这种关系似乎对原始星系和现在的星系都是成立的。这可能会限制暗能量的性质和演化。此外，由于宇宙学暗能量的排斥作用，我们还对星系团和超星系团的大小进行了限制。这可以解释为什么我们看不到比200 Mpc大得多的大尺度宇宙结构。
英文摘要：
The requirement that their gravitational binding self-energy density must at least equal the background repulsive dark energy density for large scale cosmic structures implies a mass-radius relation of M/R^2 ~ 1g/cm^2, as pointed out earlier. This relation seems to hold true for primeval galaxies as well as those at present epoch. This could set constraints on the nature and evolution of dark energy. Besides, we also set constraints on the size of galaxy clusters and superclusters due to the repulsive cosmological dark energy. This could indicate as to why large scale cosmic structures much larger than ~200Mpc are not seen.
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