CosMIn: The Solution to the Cosmological Constant Problem

Abstract

The current acceleration of the universe can be modeled in terms of a cosmological constant. We show that the extremely small value of ΛL_P^2 ~ 3.4 x 10^{-122}, the holy grail of theoretical physics, can be understood in terms of a new, dimensionless, conserved number CosMIn (N), which counts the number of modes crossing the Hubble radius during the three phases of evolution of the universe. Theoretical considerations suggest that N ~ 4π. This single postulate leads us to the correct, observed numerical value of the cosmological constant! This approach also provides a unified picture of cosmic evolution relating the early inflationary phase to the late-time accelerating phase.

ver 2 (6 pages, 2 figures) received Honorable Mention in the Gravity Research Foundation Essay Contest, 2013; to appear in Int.Jour.Mod.Phys. D

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