Falsifying Field-based Dark Energy Models

Understand

We survey the application of specific tools to distinguish amongst the wide variety of dark energy models that are nowadays under investigation.

• The first class of tools is more mathematical in character: the application of the theory of dynamical systems to select the better behaved models, with appropriate attractors in the past and future.
• The second class of tools is rather physical: the use of astrophysical observations to crack the degeneracy of classes of dark energy models.
• In this last case the observations related with structure formation are emphasized both in the linear and non-linear regimes.