Gravity under Scrutiny on Cosmic Scales


Ferté, A. (2023). Gravity under Scrutiny on Cosmic Scales. Perimeter Institute. https://pirsa.org/23090055


Ferté, Agnès. Gravity under Scrutiny on Cosmic Scales. Perimeter Institute, Sep. 05, 2023, https://pirsa.org/23090055


          @misc{ pirsa_PIRSA:23090055,
            doi = {10.48660/23090055},
            url = {https://pirsa.org/23090055},
            author = {Fert{\'e}, Agn{\`e}s},
            keywords = {Cosmology},
            language = {en},
            title = {Gravity under Scrutiny on Cosmic Scales},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {sep},
            note = {PIRSA:23090055 see, \url{https://pirsa.org}}

Agnès Ferté Stanford University


While General Relativity has withstood tests on solar system scales, progress in observational cosmology now enables tests on the largest scales. I will present results from our tests of gravity using Dark Energy Survey Year 3 weak lensing and clustering data in addition to a variety of complementary data. One outcome of this analysis was the necessity to further explore lensing consistency so I will present preliminary results of such tests using the latest Cosmic Microwave Background (CMB) lensing data. These analyses are setting the scene for future tests of fundamental physics with CMB and galaxy surveys: I will show expected results and challenges from the Rubin Observatory. I will finally argue for the use of machine learning for theory exploration, to better organize our efforts within the future experimental landscape. As PI is a leading center in outreach, I will end my talk by sharing my experience with science content creation on various social media platforms.

Zoom link: https://pitp.zoom.us/j/96929387143?pwd=WW1CZElpMkN2U1RQUjB3VERxRVQ5dz09