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Vector theory of gravity: solution of dark energy problem | | Anatoly A. Svidzinsky
; | | Date: |
22 Nov 2015 | | Abstract: | We propose an alternative classical theory of gravity which assumes that
background geometry of the Universe is fixed four dimensional Euclidean space
and gravity is a vector field $A_{k}$ in this space which breaks the Euclidean
symmetry. Direction of $A_{k}$ gives the time coordinate, while perpendicular
directions are spatial coordinates. Vector gravitational field is coupled to
matter universally and minimally through the equivalent metric $f_{ik}$ which
is a functional of $A_{k}$. We show that such assumptions yield a unique theory
of gravity, it is free of black holes and to the best of our knowledge it
passes all available tests. For cosmology our theory predicts the same
evolution of the Universe as general relativity with cosmological constant and
zero spatial curvature. However, the present theory provides explanation of the
dark energy as energy of gravitational field induced by the Universe expansion
and yields, with no free parameters, the value of $Omega _{Lambda
}=2/3approx 0.67$ which agrees with the recent Planck result $Omega _{Lambda
}=0.686pm 0.02$. Such striking agreement with cosmological data indicates that
gravity has a vector, rather than tensor, origin. Vector gravity can be tested
by making more accurate measurement of the time delay of radar signal traveling
near the Sun, by improving accuracy of the light deflection experiments or
measuring polarization of gravitational waves which differs from those in
general relativity. Resolving the supermassive object at the center of our
Galaxy with VLBA could provide another possible test of gravity and also shed
light on the nature of dark matter as we argued in JCAP ${f 10}$, 018 (2007). | | Source: | arXiv, 1511.7058 | | Services: | Forum | Review | PDF | Favorites | |
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