Bruvnesh Jain, Penn Arts & Sciences, Department of Physics and Astronomy
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Abstract: The measured expansion rate of the universe is faster than expected from the standard model of cosmology. 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, focusing on weak lensing measurements. The question of how much information is contained in galaxy surveys is still wide open. I will describe the state of play using both analytical statistics that theorists love and deep learning approaches including transformers, a promising new architecture for astronomical data (as well as chatGPT).
PAS 201 In- Person only, Refreshments, PAS 218 at 2:3PM