Exploring evidence of interaction between dark energy and dark matter

Understand

In this work we use the latest observations on SNIa, $H(z)$, BAO, $f_{gas}$ in clusters and CMBR, to constrain three models showing an explicit interaction between dark matter and dark energy.

• In particular, we use the BOSS BAO measurements at $z \simeq 0.32$, $0.57$ and $2.34$, using the full 2-dimensional constraints on the angular and line of sight BAO scale.
• We find that using all five observational probes together, two of the interaction models show positive evidence at more than 3 $ \sigma $.
• Although significant, further study is needed to establish this statement firmly.