, Astro Journal Club (2:00 PM - 3:15 PM)

-- Abstract: The Effective Field Theory of Large Scale Structure (EFTofLSS) has found tremendous success as a perturbative framework for the evolution of large scale structure, and it is now routinely used to compare theoretical predictions against cosmological observations. The model for the total matter field includes one nuisance parameter at 1-loop order, the effective sound speed, which can be extracted by matching the EFT to full N-body simulations. In this talk we show how one can estimate the effective sound speed, via separate universe techniques, with analytic calculations. The estimate is in good agreement with simulation results, and we show it can be used to extract the cosmology dependence of the effective sound speed and to shed light on what cosmic structures shape its value.

Ravi Sheth, Back to the future: Reconstructing initial conditions from galaxy surveys (2:00 PM - 3:15 PM)

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Peizhi Du, Dark Radiation Isocurvature from Cosmological Phase Transitions (2:00 PM - 3:15 PM)

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, Pullen Group Meeting (3:00 PM - 4:00 PM)

Q. Weller and M. Calkins (4:30 PM - 6:00 PM)

, Astro Journal Club (2:00 PM - 3:15 PM)

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Keith Hawkins, Galactic Archaeology in the Gaia Era (2:00 PM - 3:15 PM)

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Nathaniel Craig, Broken higher-form symmetries in particle physics (2:00 PM - 3:15 PM)

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Hogg/Blanton (2:00 PM - 3:45 PM)

, Pullen Group Meeting (3:00 PM - 4:00 PM)

Vincenzo Vitelli, Learning and Active Mechanics (4:00 PM - 5:30 PM)

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Q. Weller and M. Calkins (4:30 PM - 6:00 PM)