Speaker
Description
In recent years, the $\Lambda$CDM model has proven insufficient to fully explain the mysteries of our Universe. The emergence of a dark energy component in the early Universe has motivated a variety of frameworks aimed at closing the gap between early and late-time cosmological observations. Early Dark Energy models may alleviate existing tensions by proposing varying equations of state that alter nuclear reaction rates during the nucleosynthesis era, therefore constraining the maximum model parameters past which the standard BBN results can no longer be recovered. We investigate four such models, a cosmological constant, linear and polytropic dynamical equations of state, and a temperature-dependent formulation, and by comparing their predictions against standard BBN observables through a numerical pipeline, we identify the maximally allowed dark energy density for each case.