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2010

Coupled dark energy and dark matter from dilatation anomaly

Beyer, Joschka, Nurmi, Sami, Wetterich, Christof

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Cosmological runaway solutions may exhibit an exact dilatation symmetry in the asymptotic limit of infinite time.

In this limit, the massless dilaton or cosmon could be accompanied by another massless scalar field - the geon.
At finite time, small time-dependent masses for both the cosmon and geon are still present due to imperfect dilatation symmetry.
For a sufficiently large mass the geon will start oscillating and play the role of dark matter, while the cosmon is responsible for dark energy.

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