Dr. Justin Gage Lietz is a Postdoctoral Research Associate in the Scientific Computing Group at the National Center for Computational Sciences at Oak Ridge National Laboratory. He is part of the Center for Accelerated Application Readiness (CAAR) where he is working to prepare nuclear physics codes in the NUCCOR package for the exascale supercomputer Frontier.

His research focuses on developing predictive theories of dense nuclear matter to better understand the nuclear equation of state, which plays an important role in astrophysical processes like neutron star mergers and supernovae. Accurate simulations of the exotic states of matter inside neutron stars (10^4 m in scale) require details that originate from quarks and gluons (10^-15 m in scale)—an incredibly challenging gap to bridge. To meet these challenges, he works on: improving quantum many-body methods for increased precision and uncertainty quantification, investigating effective field theories to provide cutting edge nuclear forces, and developing highly parallel algorithms and data structures to make these numerical experiments possible.

Dr. Lietz earned his Ph.D. in Physics with a dual degree in Computational Math, Science and Engineering at Michigan State University. While at MSU he was located at the National Superconducting Cyclotron Laboratory where he studied theoretical nuclear physics and computational quantum mechanics.


Michigan State University
Physics and Computational Math, Science and Engineering
Doctor of Philosophy (Ph.D.)
University of Arizona
Physics and Mathematics
Bachelor of Science (B.S.)

R&D Activities Contributions

Center for Accelerated Application Readiness (CAAR) - In preparation for next-generation supercomputer Summit, the Oak Ridge Leadership Computing Facility (OLCF) selected 13 partnership projects into its Center for Accelerated Application Readiness (CAAR)…