Constraining the interacting dark energy models from weak gravity conjecture and recent observations

TL;DR

This paper evaluates how the weak gravity conjecture constrains interacting dark energy models and compares these theoretical constraints with recent observational data, finding observations provide tighter bounds.

Contribution

It demonstrates that while the weak gravity conjecture can restrict dark energy models, observational data impose stronger constraints, highlighting the importance of empirical evidence.

Findings

Weak gravity conjecture constrains dark energy models.

Observational data provide tighter constraints than the conjecture.

Phenomenological interactions between dark sectors are considered.

Abstract

We examine the effectiveness of the weak gravity conjecture in constraining the dark energy by comparing with observations. For general dark energy models with plausible phenomenological interactions between dark sectors, we find that although the weak gravity conjecture can constrain the dark energy, the constraint is looser than that from the observations.