Vacuum Energy as the Origin of the Gravitational Constant

Details Vacuum Energy as the Origin of the Gravitational Constant Vacuum Energy as the Origin of the Gravitational Constant

2009-10-15

arxiv.org/abs/0910.2730v2

Found.Phys.39:1407-1425,2009

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, 1 figure. Added references

Scientific paper

10.1007/s10701-009-9364-z

We develop a geometro-dynamical approach to the cosmological constant problem (CCP) by invoking a geometry induced by the energy-momentum tensor of vacuum, matter and radiation. The construction, which utilizes the dual role of the metric tensor that it structures both the spacetime manifold and energy-momentum tensor of the vacuum, gives rise to a framework in which the vacuum energy induced by matter and radiation, instead of gravitating, facilitates the generation of the gravitational constant. The non-vacuum sources comprising matter and radiation gravitate normally. At the level of classical gravitation, the mechanism deadens the CCP yet quantum gravitational effects, if can be strong in de Sitter space, can keep it existent.

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