Our research focuses on strong interaction matter in the laboratory and the cosmos, based on effective field theories of quantum chromodynamics. We are interested in the physics of nuclear forces and nuclei at the extremes; neutron stars, supernovae and mergers, as multi-messenger probes of neutron-rich matter; electroweak interactions in nuclei and fundamental symmetries; the nuclear physics of dark matter detection; and universal properties of strongly interacting neutrons and ultracold atoms. We hope you will enjoy exploring our research on our group webpage.

We have developed renormalization group methods for nuclear forces and a powerful ab initio approach for nuclei, the in-medium similarity renormalization group. This has enabled systematic calculations of nuclei reaching up to 200 nucleons. Our work has also elucidated the role of three-body forces for the limits of bound nuclei and for the emergence of shell structure in nuclei. For matter in astrophysics, we have advanced effective field theory calculations to neutron matter, including calculations with two-, three- and four-nucleon interactions and quantum Monte Carlo simulations with chiral effective field theory interactions. This provides tight constraints for matter in neutron stars and predicted neutron star radii consistent with LIGO/Virgo constraints from GW170817 and with NICER observations. Going beyond nuclear physics, we have advanced chiral effective field theory to weak interactions, neutrino physics, and dark matter direct detection.