Data: 25.05.2023

Palestrante: Dr. Bhuv Jain (University of Pennsylvania)

Link: https://youtube.com/live/iRYNDhTbHCI

Resumo: The measured expansion rate of the universe is faster than expected from the standard model of cosmology (when calibrated to the early universe). Independent of this ‘cosmic expansion puzzle’, the growth of large-scale structure also appears slower than expected. I will summarize the status of these puzzles and possible resolutions. I will present results from weak lensing measurements with the Dark Energy Survey.  I will then describe ‘beyond 2-point statistics’ ranging from three-point correlations to deep learning methods that help address the growth of structure tension.