At the Cosmic frontier, we make precision studies of key cosmological observables sensitive to new physics effects, such as the baryon-to-photon ratio, dark matter relic density, tensor-to-scalar ratio, etc, in order to address outstanding cosmological puzzles, such as the matter-antimatter asymmetry, dark matter and inflation. We are also paying close attention to the exciting recent developments in high-energy neutrino astronomy and gravitational wave astronomy, and in particular, how they can be made useful in probing new physics models.

Selected Publications: 1804.04919, 1609.03939, 1606.04517, 1605.09743, 1602.04203, 1404.1003