We will present the latest results from our experiment DESI (Dark Energy Spectroscopic Instrument). DESI is making the largest and most precise 3-D map of the universe measuring over 40 millions galaxies and quasars within a 5 year period. The footprint left in the distribution of galaxies due to Baryon Acoustic Oscillations (BAO) allow us to determine with great precision the expansion rate of the universe and the dynamics of Dark Energy. Current DESI have ruled out a cosmological constant as dark energy at 95% confidence level opening the window for a dynamical dark energy. Here, we will proceed to present a dark energy model derived from particle physics consistent with current DESI data, allowing for an explanation of the nature of Dark Energy.