John got his PhD from Carnegie Mellon University where he worked with Professor Colin Morningstar on quark propagators in Lattice QCD. He spent two years as a Postdoctoral Research Fellow at the Neumann Institute for Computation and two more as a Non-Member State Theory Fellow at CERN before being named the Hitachi Assistant Professor of High-Performance Computing at Trinity College Dublin.
His recent research goal has been to calculate hadron-hadron scattering amplitudes from first-principles lattice QCD simulations. He has recently completed a benchmark calculation of the lowest lying hadron resonance (the rho) in an unprecedentedly large physical volume, which was enabled by algorithmic advances from himself and collaborators. As a member of the Coordinated Lattice Simulations (CLS) consortium, which is composed of researchers across the EU, he is now applying these state-of-the-art algorithms to other systems as well as performing first calculations of resonance photoproduction amplitudes such as the time like pion form factor. Finally, in the future these techniques will be applied to strongly coupled BSM models to calculate resonance properties relevant for LHC phenomenology.