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Solving the Coincidence Problem using Interacting Fluid Models

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If you have a question about this talk, please contact Dr Sebastien Renaux-Petel .

The coincidence problem in cosmology asks why the densities of dark matter and dark energy in the Universe are comparable today. A possible approach to this problem is to consider dark matter and dark energy not as separately evolving fluids, but as two fluids that interact with each other. We examine a natural form of interaction and discuss its consequences, including the result that it is possible to get solutions in which the ratio of the dark densities varies periodically.

This talk is part of the DAMTP Friday GR Seminar series.

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