Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-04-30
Phys.Rev. D58 (1998) 103511
Astronomy and Astrophysics
Astrophysics
RevTeX, 13 pages
Scientific paper
10.1103/PhysRevD.58.103511
In this paper we present a general, model independent analysis of a recently detected apparent cosmic repulsion, and discuss its potential implications for gravitational theory. In particular, we show that a negatively spatially curved universe acts like a diverging refractive medium, to thus naturally cause galaxies to accelerate away from each other. Additionally, we show that it is possible for a cosmic acceleration to only be temporary, with some accelerating universes actually being able to subsequently recontract.
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