Basic Approach to the Problem of Cosmological Constant and Dark Energy

Details Basic Approach to the Problem of Cosmological Constant and Dark Energy Basic Approach to the Problem of Cosmological Constant and Dark Energy

2001-11-05

arxiv.org/abs/astro-ph/0111071v2

Appendix A, pages 115 - 144, in: M. Carmeli, "Cosmological Special Relativity: The Large-Scale Structure of Space, Time and Ve

Astronomy and Astrophysics

Astrophysics

19 pages LaTeX, 6 figures in gzipped "eps" files, paper presented at COSMO-01, to be published in the Proceedings

Scientific paper

Most of the calculations done to obtain the value of the cosmological constant use methods of quantum gravity, a theory that has not been established as yet, and a variety of results are usually obtained. The numerical value of the cosmological constant is then supposed to be inserted in the Einstein field equations, hence the evolution of the Universe will depend on the calculated value. Here we present a fundamental approach to the problem. The theory presented here uses a Riemannian four-dimensional presentation of gravitation in which the coordinates are those of Hubble, i.e. distances and velocity rather than space and time. We solve these field equations and show that there are three possibilities for the Universe to expand but only the accelerating Universe is possible. From there we calculate the cosmological constant and find that its value is given by 1.934x10^(-35)s^-2. This value is in excellent agreement with the measurements obtained by the High-Z Supernova Team and the Supernova Cosmology Project. Finally it is shown that the three-dimensional space of the Universe is Euclidean, as the Boomerang experiment shows.

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