Paper: astro-ph/0507381
Date: Sat, 16 Jul 2005 03:02:31 GMT (183kb)

Title: Testing the "dark-energy"-dominated cosmology via the solar-system
experiments

Authors: Yurii V. Dumin (University of California, Los Angeles)
Comments: Single PDF file, 7 pages. Text of the report presented at few recent
conferences
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According to the recent astronomical data, the most part of energy density in
the Universe (73%) is in the "dark" form (such as the so-called "quintessence",
inflaton potential, polarization of vacuum, and so on), which is effectively
described by Lambda-term in the Einstein equations. All arguments in favor of
the dark energy were obtained so far from the observational data related to
very large (intergalactic) scales. The present letter shows that
Lambda-dominated cosmology can be efficiently tested via the solar-system
experiments, seeking for the effect of local Hubble expansion: if the dark
energy really exists, it should increase the mean Earth-Moon distance by 2-3 cm
per year, which is comparable with the effect of geophysical tides and well
measurable by the lunar laser ranging. As follows from our analysis, the
"local" Hubble constant should be H_0^(loc) = 56 +/- 8 (km/s)/Mpc, implying
that either the total Hubble constant is H_0 = 59 +/- 8 (km/s)/Mpc (i.e. a bit
less than the commonly-accepted value) or fraction of the dark energy in the
total contents of the Universe is not so large.

\\ ( http://arXiv.org/abs/astro-ph/0507381 , 183kb)