The cosmological constant problem and re-interpretation of time

The Cosmological Constant and the Coincidence Problem in a New Cosmological Interpretation of the Universal Constant " C "

In a recent paper [1] it has been suggested that the velocity of light and the expansion of the universe are two aspects of one single concept connecting space and time in the expanding universe. It has then be shown that solving Friedmann's equations with that interpretation (and keeping c = constant) can explain number of unnatural features of the standard cosmology (for example: the flatness...

The Cosmological Constant and its Interpretation

On the Cosmological Constant Problem

We prove that Weyl invariant theories of gravity possess a remarkable property which, under very general assumptions, explains the stability of flat space-time. We show explicitly how conformal invariance is broken spontaneously by the vacuum expectation value of an unphysical scalar field; this process induces general relativity as an effective long distance limit. We show that all ghost degre...

3 Cosmological Constant Problem

The cosmological constant problem is reviewed and a possible quantum gravity resolution is proposed. A space satellite Eötvös experiment for zero-point vacuum energy is proposed to see whether Casimir vacuum energy falls in a gravitational field at the same rate as ordinary matter. 1 Cosmological Constant Problem • It is generally agreed that the cosmological constant problem (CCP) is one of th...

Back Reaction of Cosmological Perturbations and the Cosmological Constant Problem

The presence of cosmological fluctuations influences the background cosmology in which the perturbations evolve. This back-reaction arises as a second order effect in the cosmological perturbation expansion. The effect is cumulative in the sense that all fluctuation modes contribute to the change in the background geometry, and as a consequence the back-reaction effect can be large even if the ...