Is the Observational Dark Energy Universe Completely a Coincidence?

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Abstract

In this article, I propose a model that gives a ‘Not really’ answer to the question in the title: At any epoch of the universe, to an arbitrary local observer living well below the scale of Hubble horizon, the observational universe appears to be accelerated expanding. In other words, the anthropic principle might be unnecessary for the dark energy universe ‘coincidence’. In this article, the negative pressure energy density results from the variance of relative acceleration of the patches of the observational universe, thus the not perfectly uniform flow of time. I will show how such a story is qualitatively compatible with the CMB and low-redshift observations on the expansion history of our universe, while providing intriguing implications to be tested against the recently puzzling high-redshift AGNs and galaxies observations.

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