Tuesday, December 20, 2011

1112.4449 (O. V. Babourova et al.)

Dark energy, Dirac's scalar field and the cosmological constant problem    [PDF]

O. V. Babourova, B. N. Frolov
The solutions of the field equations of the conformal theory of gravitation with Dirac scalar field in Weyl-Cartan spacetime in very early universe are obtained. In this theory dark energy (describing by an effective cosmological constant) is a function of the Dirac scalar field $\beta$. These solutions describe the exponential decreasing of $\beta$ at the first exponential stage of inflation. One of these solutions has a limit to a constant value of the dark energy at large time that can give a way to solving the fundamental cosmological constant problem as a consequence of the fields dynamics in the early universe.
View original: http://arxiv.org/abs/1112.4449

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