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      CosMIn: The Solution to the Cosmological Constant Problem

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          Abstract

          The current acceleration of the universe can be modeled in terms of a cosmological constant. We show that the extremely small value of \Lambda L_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 ~ 4\pi. 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.

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          Review of Particle Physics

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            Author and article information

            Journal
            13 February 2013
            2013-07-10
            Article
            10.1142/S0218271813420017
            1302.3226
            d04157d1-c2f1-441d-bde3-61c0935a6e4f

            http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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            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
            astro-ph.CO gr-qc hep-th

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