Quintessential Adjustment of the Cosmological Constant

Details Quintessential Adjustment of the Cosmological Constant Quintessential Adjustment of the Cosmological Constant

2000-03-29

arxiv.org/abs/hep-ph/0003287v2

Phys.Rev.Lett.85:3339-3342,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

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Scientific paper

10.1103/PhysRevLett.85.3339

We construct a time dependent adjustment mechanism for the cosmological "constant" which could be at work in a late Friedmann-Robertson-Walker universe dominated by quintessence and matter. It makes use of a Brans-Dicke field that couples to the evolving standard-model vacuum energy density. Our explicit model possesses a stable late-time solution with a fixed ratio of matter and field energy densities. No fine tuning of model parameters or initial conditions is required.

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