What is the physics governing the accelerated expansion of the universe, dark matter and cosmic inflation? I use a combination of cosmological data-analysis, simulation and theory to distill massive galaxy survey and cosmic microwave background data sets into insight into these questions.

Much of the science I do is enabled by the contributions of scientists in a number of large collaborations, including the Dark Energy Survey, Dark Energy Spectroscopic Instrument and the Rubin Observatory Legacy Survey of Space and Time Dark Energy Science Collaboration .