Holographic field theory models of dark energy in interaction with dark matter

TL;DR

This paper explores holographic models of dark energy interacting with dark matter, showing observational consistency and suggesting dark energy decays into dark matter, which helps address the coincidence problem.

Contribution

It introduces two holographic dark energy models with interaction terms and compares them with observational data, demonstrating their viability and implications.

Findings

Models are consistent with observational data.

Evidence for non-zero interaction between dark sectors.

Dark energy likely decays into dark matter.

Abstract

We discuss two lagrangian interacting dark energy models in the context of the holographic principle. The potentials of the interacting fields are constructed. The models are compared with CMB distance information, baryonic acoustic oscilations, lookback time and the Constitution supernovae sample. For both models the results are consistent with a non vanishing interaction between dark sectors - with more than three standard deviations of confidence for one of them. Moreover, in both cases, the sign of coupling is consistent with dark energy decaying into dark matter, alleviating the coincidence problem.