Emergent Dark Universe and the Swampland Criteria

Understand

We study a model of the emergent dark universe, which lives on the time-like hypersurface in a five-dimensional bulk spacetime.

• The holographic fluid on the hypersurface is assumed to play the role of the dark sector, mainly including the dark energy and apparent dark matter.
• Based on the modified Friedmann equations, we present a Markov-Chain-Monte-Carlo analysis with the observational data, including type Ia Supernova and the direct measurement of the Hubble constant.
• We obtain a good fitting result and the matter component turns out to be small enough, which matches well with our theoretical assumption that only the normal matter is required.