PIRSA:25080018

Measuring H0 and dark energy with DESI

Percival, W. (2025). Measuring H0 and dark energy with DESI. Perimeter Institute. https://pirsa.org/25080018

Percival, Will. Measuring H0 and dark energy with DESI. Perimeter Institute, Aug. 25, 2025, https://pirsa.org/25080018 

          @misc{ pirsa_PIRSA:25080018,
            doi = {10.48660/25080018},
            url = {https://pirsa.org/25080018},
            author = {Percival, Will},
            keywords = {Cosmology, Particle Physics, Strong Gravity},
            language = {en},
            title = {Measuring H0 and dark energy with DESI},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {aug},
            note = {PIRSA:25080018 see, \url{https://pirsa.org}}
          }

Will Percival University of Waterloo

Talk numberPIRSA:25080018
DOI10.48660/25080018
Collection
Talk Type Conference
Subject

Abstract

The Dark Energy Spectroscopic Instrument (DESI) is the first of a new generation of Dark Energy experiments and probes evolution in the universe using galaxy clustering. Within the galaxy clustering signal, the projected location of the Baryon Acoustic Oscillations (BAO) acts as a standard ruler to map cosmic evolution. I will present the latest BAO results from the DESI Data Release 2 (DR2) sample, which contains 3 years of data, and their impact on our understanding of dark energy and neutrino masses. Finally, I will consider how the amplitude of the BAO signal can help us measure the Hubble constant, potentially helping to solve the Hubble tension.