Coincidence of Universe Age in {Lambda }CDM and Milne Cosmologies
Abstract
The age of the Universe in the {Lambda }CDM cosmology with {Omega }{matter}=0.26 and {Omega }{Lambda }=0.74 is the same as in the Milne cosmology which corresponds to an almost empty universe. In both cases it is a reciprocal Hubble constant, 1/H0, that for now preferred value H0=71 km/s/Mpc is 13.7 billion years. The most curious coincidence is that at the present time, in the {Lambda }CDM model the decelerated expansion is exactly compensated by the accelerated expansion, as if the Universe coast for 13.7 billion years.
- Publication:
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Acta Physica Polonica B
- Pub Date:
- January 2007
- DOI:
- 10.48550/arXiv.astro-ph/0605175
- arXiv:
- arXiv:astro-ph/0605175
- Bibcode:
- 2007AcPPB..38..215K
- Keywords:
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- Astrophysics
- E-Print:
- 2 pages, 1 figure, to apear in Acta Physica Polonica B