Physical constants and the Gurzadyan-Xue formula for the dark energy

Details Physical constants and the Gurzadyan-Xue formula for the dark energy Physical constants and the Gurzadyan-Xue formula for the dark energy

2005-11-04

arxiv.org/abs/astro-ph/0511131v3

Mod.Phys.Lett.A21:729-733,2006

Astronomy and Astrophysics

Astrophysics

version corrected to match the one to appear in Modern Physics Letters A

Scientific paper

10.1142/S0217732306020081

We consider cosmological implications of the formula for the dark energy density derived by Gurzadyan and Xue which predicts a value fitting the observational one. Cosmological models with varying by time physical constants, namely, speed of light and gravitational constant and/or their combinations, are considered. In one of the models, for example, vacuum energy density induces effective negative curvature, while another one has an unusual asymptotic. This analysis also explicitely rises the issue of the meaning and content of physical units and constants in cosmological context.

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