Speaker
William Giarè
Description
In this talk, I will discuss how recent DESI results may reshape our understanding of the dark energy sector. I will focus on the emerging preference for late-time dynamical dark energy and its possible connection with early-time components active before recombination, often invoked to address the Hubble tension. I will ask whether early- and late-time dark energy require distinct extensions of ΛCDM, or whether they can emerge as different manifestations of the same underlying dark-sector dynamics.