Cosmological implications of tracker scalar fields: Testing the evidence for dynamical dark energy with recent data
The study tested non-phantom tracker scalar field models as dynamical dark energy using CMB and other observational data. While some models, like IAX, are favored over others, none show a significant preference for dynamical dark energy over the standard ΛCDM model in the non-phantom regime. The results suggest that ΛCDM remains the better fit for current observations.