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Title: "Dark Energy and the Hubble Tension"
Abstract: Modified gravity theories that can drive the cosmic acceleration predict fifth forces that are hidden in the Milky Way using screening mechanisms. It is possible that other galaxies could be unscreened depending on their environment. In this talk, I will show how unscreening Cepheid stars in other galaxies could alter the calibration of the distance ladder, alleviating the tension between local and CMB measurements of the Hubble constant.
Events are free and open to the public unless otherwise noted.