My research program is driven by a desire to reveal and understand the long distance properties of the nonperturbative quantum field theory, Quantum Chromodynamics (QCD). QCD describes the interactions of quarks and gluons and the manner in which they form particles such as the proton, neutron, the nucleus, and an extensive list of other particles. The most interesting aspects of the theory lie deep in the nonperturbative long-distance regime where charge radii or magnetic moments probe the theory at scales the size of a proton.
At the CSSM we have a dynamic team of researchers revealing the properties of QCD using fundamental approaches including the first principles method of lattice QCD, currently the most successful, reliable and promising approach to understanding the physical properties of QCD. The model-independent approach of chiral effective field theory complements lattice QCD simulations by providing exact predictions of the nonanalytic behavior of observables in the light quark-mass regime. The numerical simulation of QCD on a space-time lattice complemented by chiral effective field theory provides a fundamental formulation of QCD, ab initio predictions of observables, and the quantitative elimination of systematic errors.
Visualizing the massive
amounts of scientific data generated in supercomputer simulations has
provided many new insights into the manner in which QCD constructs the
world around us.