APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Zack (zequn) Li (Canadian Institute for Theoretical Astrophysics)
Title: Learning from the CMB with new data and differentiable theory
Date (JST): Thu, Nov 17, 2022, 11:00 - 12:00
Place: Hybrid
Abstract: I’ll discuss three strategies for making new discoveries from the Cosmic Microwave Background: taking more data, improving our analysis, and accelerating theory exploration. I’ll share my excitement about the next generation of CMB experiments, and give an update on the progress of the Simons Observatory. I’ll also describe the development of a new suite of mock galaxy simulations to enable joint analyses of the CMB with large-scale structure. Finally, I’ll provide a first look at Bolt, the first differentiable Einstein-Boltzmann solver. Bolt accelerates the exploration of the space of theories, by computing theory predictions like CAMB and CLASS along with exact gradients of observables with respect to input parameters.