Theoretical Basis for a Solution to the Cosmic Coincidence Problem

Details Theoretical Basis for a Solution to the Cosmic Coincidence Problem Theoretical Basis for a Solution to the Cosmic Coincidence Problem

2006-03-03

arxiv.org/abs/gr-qc/0603005v10

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Final version, minor changes to references

Scientific paper

Following a short discussion of some unresolved issues in the standard model of cosmology (considered to be a generic $\Lambda$CDM model with flat geometry and an early period of inflation), we describe the current state of research on the problem of negative action. Arguments are then given to the effect that traditional assumptions concerning the behavior of negative action matter give rise to violations of both the principle of relativity and the principle of inertia. We propose an alternative set of axioms that would govern the behavior of negative action matter if it is to be considered a viable element of physical theories upon which cosmological models are build. We then elaborate a simple framework, based on general relativity and the proposed axioms, which enables the formulation of quantitative predictions concerning the interaction between positive and negative action bodies. Based on those developments, a solution is proposed to the problem of the discrepancy between current experimental and theoretical values of vacuum energy density (in any cosmological model), which is at once also a solution to the problem of the unexplained coincidence between the (model dependent) experimental values of vacuum energy density and present day average matter energy density. We also show how irreversibility naturally arises in cosmological models derived in this context.

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